Some standard content:
Industry Standard of the People's Republic of China
Technical Conditions for Masonry of Lime Kiln
HG/T 20641--98
Editing Unit: Industrial Furnace Design Technology Center of the Ministry of Chemical Industry
Approving Department: Chemical Industry
Implementation Date: May 1, 1998 Engineering Design Standard Editing Center of the Ministry of Chemical Industry
Beijing, 1998
1 Basis for Revision of Standards
This standard is revised on the basis of the requirements of Document No. 90 (1996) of the Construction Coordination Department of the Ministry of Chemical Industry "Notice on Issuing the 1996 Basic Design Work Plan", and on the basis of the original CD132A21-88 "Technical Conditions for Masonry of Lime Kiln" (Trial) (hereinafter referred to as the "original standard") issued in April 1989. After several years of trial operation, with the development of lime kiln design and construction technology, and combined with the current status of lime kiln production technology development in the past decade, in order to improve the lime kiln masonry construction technology, further ensure the masonry quality, and meet the needs of lime kiln design and construction technology, the original standard has been revised and enriched.
2 Main technical content of the standard
This technical condition stipulates the masonry construction requirements of mechanized vertical lime kilns that use coke or anthracite as fuel and are automatically or semi-automatically controlled. Corresponding requirements are also put forward for the kiln shell, kiln lining materials, winter construction, masonry project acceptance and kiln baking that affect the masonry quality. 3 Changes in content when revising the standard
During this revision, some clauses were added to the original standard for the kiln lining materials, masonry, winter construction and kiln baking, making this technical condition more practical. In terms of kiln lining materials, requirements for material transportation and storage are added, and commonly used materials and their standards are listed.
In the masonry part, the preparation work before masonry is added, emphasizing the importance of masonry preparation work to ensure the quality of masonry. In addition, some specific requirements for masonry are also enriched.
For the winter construction of lime kilns, this technical condition takes into account the characteristics of lime kiln masonry projects and puts forward the requirement that "in order to ensure the overall masonry quality of lime kilns, winter construction should not be carried out": but in view of the needs of the project construction schedule or production needs, the requirements that must be followed during winter construction of lime kilns that must be carried out in winter. In the acceptance of masonry projects, it is proposed that quality inspection and evaluation should be carried out in accordance with relevant standards as an important part of ensuring masonry quality. For the baking of lime kilns, according to the different stages of lime kiln masonry construction in engineering construction, the one-step method of baking and opening the kiln and the one-step method of baking and opening the kiln are proposed to make the requirements of this part closer to production reality.
Authorized responsible for the specific interpretation of this standard and address unit: Industrial Furnace Design Technology Center Station of the Ministry of Chemical Industry Address: First Design Institute of the Ministry of Chemical Industry, Beicang, Tianjin Postal Code: 300400
Main editor and main drafter of the standard compilation Main editor: Industrial Furnace Design Technology Center Station of the Ministry of Chemical Industry Main drafters: Zhang Qiaxing Liu Peide Cao Changlong 1 General Principles
1.0.1 In order to make the masonry construction of lime kilns have rules to follow, thereby ensuring the masonry quality of lime kilns and adapting to the continuous development of lime production technology, this regulation is specially formulated. 1.0.2 This technical condition is applicable to the masonry construction of mechanized vertical lime kilns that use coke or anthracite as fuel and are automatically or semi-automatically controlled. The masonry construction of other vertical lime kilns can also be used as a reference.
The lining structure of mechanized vertical lime kiln is shown in Figure 1.0.2. 1.0.3 The outer shell of the kiln directly affects the masonry of the kiln lining. This technical condition puts forward certain requirements for the production of the outer shell of the kiln; however, this technical condition does not stipulate the construction requirements of the parts not related to the masonry of the kiln lining.
1.0.4 When the kiln lining of the lime kiln is being built, it should be carried out only after the steel structure of the kiln is installed and passed the inspection.
1.0.5 In addition to complying with this technical condition, the construction and acceptance of the lime kiln should also comply with the provisions of the relevant mandatory standards currently in force in the country. The main ones are: "Industrial Furnace Masonry Engineering Construction and Acceptance Code" (GBI211), "Industrial Furnace Masonry Engineering Quality Inspection and Evaluation Standard" (GB50309) and "Chemical Industrial Furnace Masonry Technical Conditions" (HG20543). 1.0.6 Related standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards.
GB2988
GB/T2994
GB3003
GB3417
GB3712
《High Alumina Bricks》
《High Alumina Refractory Slurry》
《Ordinary Alumina Silicate Refractory Fiber Felt》
《Clay Bricks for Blast Furnaces》
《Clay and High Alumina Refractory Castables》2
GB3 994
GB3996
GB4415
GB5101:
GB11835
《Clay Insulating Refractory Bricks》
《Diatomaceous Earth Insulating Products》
《Clay Refractory Bricks》
《Sintered Ordinary Bricks》
《Rock Wool, Slag Wool and Their Products for Insulation》《Clay Refractory Slurry》
GB/T 14982 4
GB10325
GBJ 211
GB50309
HG20543
JB/T4735
《Rules for the Stacking, Sampling, Acceptance, Storage and Transportation of Refractory Products》《Construction and Acceptance Specifications for Industrial Furnace Construction Projects》《Industrial Furnace Masonry Project Quality Inspection and Assessment Standards》《Technical Conditions for Masonry of Chemical Industrial Furnaces》
《Expanded Perlite》
《Steel Welded Atmospheric Pressure Vessel》
Figure 1.0.2 Mechanized Vertical Lime Kiln Village Composition—Insulation Layer + 4
—Inner Layer (—) 2——Inner Layer (II): 3—Lower Cone.
2 Kiln Shell
2.0.1 The manufacture and installation of the kiln shell must comply with the requirements of the design drawings. 2.0.2 The welded kiln shell should ensure good welding quality. The weld surface should be smooth and round without residual weld bends.
2.0.3 When welding the kiln shell, the allowable deviation of the misalignment of the longitudinal and annular weld joints is ±2mm
2.0.4 After the kiln shell is welded, it should be ensured to have a good appearance. The difference between the maximum inner diameter and the minimum inner diameter on the same section of the shell should not be greater than 30mm. The allowable deviation of the cylindricality of the kiln shell is ±15mm. 2.0.5 The inner surface of the kiln shell should be smooth and flat. When measured with a 2m long ruler, the allowable deviation of its straightness is ±5mm, and it should change gradually and gently along the measured length. 2.0.6 The verticality tolerance of the shell should not be greater than 3mm in every 2m length direction, and the allowable deviation within the total height is 20mm. 2.0.7 The verticality tolerance of the center line of the kiln shell should not exceed 20mm in the entire height direction.
2.0.8 The position tolerance of the center coordinates of the kiln shell shall not be greater than 20mm. The position tolerance of the kiln shell in the height direction shall not be greater than 20mm. 2.0.9
After the kiln shell is welded and passed the inspection, the inner wall shall be promptly derusted and anti-corroded.
2.0.10
The remaining technical requirements in the kiln shell production process can refer to the relevant provisions of "Steel Welded Atmospheric Pressure Vessels" (JB/T4735). 3 Kiln lining materials
3.1 Inspection, storage and transportation of materials
3.1.1 The refractory products and materials used for kiln lining must be inspected, stored and transported in accordance with the provisions of "Rules for the Stacking, Sampling, Acceptance, Storage and Transportation of Refractory Products" (GB10325) and relevant technical documents.
The refractory materials and products transported to the masonry site should have a quality certificate. The validity period of refractory materials with time limit should be verified. Before masonry, the brand, brick number, grade, etc. of refractory materials and products should be visually inspected or selected according to regulations to see if they meet the standards, technical conditions and design requirements. If necessary, they should be inspected and determined by the laboratory. 3.1.2 During storage and transportation, refractory materials and products are strictly prohibited from being exposed to moisture and rain, and pollution should be prevented.
3.1.3 When loading, unloading and transporting refractory products, they should be handled with care and arranged closely to avoid collision and damage to the bricks.
3.1.4 Refractory materials and products kept on site should be stored in a covered warehouse, and the warehouse should be well ventilated. Refractory materials and products shall not be stacked directly on wet ground. 3.1.5 Refractory materials or products in warehouses or masonry sites should be reasonably stacked according to brand, brick number, grade and masonry sequence, and eye-catching signs should be set. 3.2 Commonly used lining materials and their standards
3.2.1. The commonly used materials for lime kiln lining are clay refractory bricks, high alumina bricks, clay heat-insulating refractory bricks, diatomite heat-insulating products, refractory fibers, other heat-insulating materials (such as slag wool, expanded perlite, etc.), refractory castables, sintered ordinary bricks (red bricks), etc., depending on the operating conditions and the use parts. 3.2.2 The physical and chemical indicators, shape and size deviations of the commonly used materials and products for lime kiln lining shall meet the requirements of national standards or design documents. 3.2.3 The heating surface of clay refractory bricks can be selected from grade N-1 first-class clay refractory bricks, whose physical and chemical indicators, shape and size deviations shall meet the requirements of "Clay Refractory Bricks" (GB4415); grade ZGN-42 and GN-42 first-class clay bricks for blast furnaces can also be selected. Their physical and chemical indicators, shape and size deviations shall meet the requirements of "Clay Bricks for Blast Furnaces" (GB3417).
3.2.4 High Alumina Bricks
The first-grade high alumina bricks with the grades of LZ-55 and LZ-65 can also be used for the heating surface of the kiln lining. The physical and chemical indicators, shape and size deviations shall comply with the requirements of "High Alumina Bricks" (GB2988). 3.2.5 Clay Insulating Refractory Bricks
The insulating refractory material of the inner layer of the kiln lining can be clay insulating refractory bricks NG-1.0. Its physical and chemical indicators, shape and size deviations shall comply with the requirements of "Clay Insulating Refractory Bricks" (GB3994).
3.2.6 Diatomaceous Earth Insulating Products
As one of the insulation materials for the outer layer of the kiln lining, the diatomaceous earth product GG-0.6, its performance, shape and size deviations shall comply with the requirements of "Diatomaceous Earth Insulating Products" (GB3996). 3.2.7 Refractory fiber
The outer insulation material of the kiln lining can also be refractory fiber felt, with the brand name PXZ-1000. Its physical and chemical properties and the allowable deviation of the external dimensions shall comply with the requirements of "Ordinary aluminum silicate refractory fiber felt" (GB3003).
3.2.8 Other insulation materials for kiln lining
Other insulation materials for kiln lining can also be slag wool, expanded perlite, etc. Their performance requirements shall comply with the provisions of "Rock wool, slag wool and its products for insulation" (GB11835) and "Expanded perlite" (JC209) respectively. 3.2.9 Refractory castables and refractory castable prefabricated products are used as refractory castables for kiln linings. Their technical properties shall comply with the requirements of "cement refractory castables" and "inorganic refractory castables" in the provisions of "clay and high-alumina refractory castables" (GB3712).
The allowable deviation of the size of the prefabricated refractory castables shall comply with the provisions of GB3712.
3.2.10 Sintered ordinary bricks (red bricks)
When red bricks are used for the outer layer of the kiln lining, its performance shall comply with the requirements of "Sintered ordinary bricks" (GB5101) with a bid number not less than 100 and a grade of first-class products. 3.3 Mud for kiln lining
: 3.3.1 The mud brand used for kiln lining shall match the selected refractory material; the particle size requirements of the refractory mud shall be determined by the thickness requirements of the brick joints. The prepared refractory mud must have good and suitable construction performance. 3.3.2 Clay Refractory Mud
For the masonry of clay refractory bricks, clay insulation fire bricks, and diatomite insulation products, clay refractory mud should be used, and its performance should meet the requirements of NN-45A in the "Clay Refractory Mud" (GB/T14982). The particle size requirements of refractory mud should be fine-grained refractory mud and blast furnace refractory mud.
3.3.3 High-alumina refractory mud
For the masonry of high-alumina refractory materials, high-alumina refractory mud should be used, and its performance should meet the requirements of LF-60 and LF-70 in the "High-alumina Refractory Mud" (GB/T2994). The particle size requirements of high-alumina refractory mud should be fine-grained refractory mud. 3.3.4 Mortar for refractory castable precast blocks When refractory castable precast blocks are used to build kiln linings, refractory mortar of the same quality as the precast blocks should be used, and should have an appropriate mix ratio and consistency. When building high-alumina cement refractory castable precast blocks, high-alumina cement mortar should be used; when building silicate cement refractory castable precast blocks, silicate cement mortar should be used; when building phosphate refractory castable precast blocks, phosphate mortar should be used; when building water glass refractory castable precast blocks, water glass mortar should be used.
The raw material composition and mix ratio of the mortar for building the above-mentioned refractory castable precast blocks are shown in Table 3.3.4.
3.3.5 Mortar for building red bricks
Mortar for building red bricks in kiln linings can generally be cement-lime mortar or cement-clay mortar.
Table 3.3.4 Mortar for masonry of refractory castable precast blocks
Phosphoric acid slurry
Hydro-glass slurry
Materials and requirements
High alumina clinker powder
High lead cement (greater than No. 425)
Portland cement
Clay clinker powder
High alumina clinker powder (those less than 0.088mm should be greater than 80%)Industrial phosphoric acid (concentration 85%)
Clay clinker powder
Water glass (specific gravity 1.30~1.35)
Composition (weight %)
20~25
Add appropriate amount
Add appropriate amount
Add 16~～18
Add 15~～24
4 Masonry
4.1 Preparation before masonry
4.1.1 Before masonry of lime kiln, a reasonable masonry construction technology plan must be formulated to ensure the masonry quality of kiln lining.
4.1.2 The foundation, kiln shell and related steel structures and equipment of lime kiln shall be constructed and installed, meet the requirements of design drawings, and pass the inspection and sign the "Process Handover Certificate" before the kiln lining can be masonry.
The process handover certificate shall include the following contents: 1. The manufacturing inspection certificate and inspection record of the lime kiln shell; 2. The measurement record of the center line and control elevation after the kiln shell is installed; 3. The installation quality and welding quality record of the parts related to the kiln shell; 4. The acceptance record of the concealed project.
4.1.3 After the installation of the kiln shell is inspected and qualified, the control elevation shall be marked from bottom to top on its inner surface according to the requirements of the brick layer and brick joints as one of the means to ensure the quality of masonry. 4.1.4 The inner surface of the kiln shell shall be carefully cleaned, and the rust, oil and other debris on the surface shall be completely removed, and anti-corrosion paint shall be applied. 4.1.5 It shall be able to provide power, lighting, and water (usually drinking tap water) for mixing refractory mud and refractory castables that meet the requirements of masonry construction. 4.1.6 The horizontal and vertical transportation equipment required for masonry construction should be installed and ready, and have passed the test run. Special machinery such as mixers, brick cutters, brick grinders, vibrators, etc. for mud or castables should be installed and debugged to meet the use requirements. The equipment and machinery used for masonry should have complete operation and maintenance procedures, and be assigned a dedicated person to implement them.8 Other insulation materials for kiln linings
Other insulation materials for kiln linings can also be selected from slag wool, expanded perlite, etc. Their performance requirements should comply with the provisions of "Rock wool, slag wool and their products for insulation" (GB11835) and "Expanded perlite" (JC209) respectively. 3.2.9 Refractory castables and refractory castable preforms are used as refractory castables for kiln linings. Their technical performance should comply with the requirements for "cement refractory castables" and "inorganic refractory castables" in the provisions of "Clay and high-alumina 6
Refractory castables" (GB3712).
The size tolerance of refractory castable preforms should comply with the provisions of GB3712.
3.2.10 Sintered ordinary bricks (red bricks)
When red bricks are used for the outer layer of the kiln lining, their performance should meet the requirements of "Sintered Ordinary Bricks" (GB5101) with a bid number not less than 100 and a grade of first-class products. 3.3 Mud for kiln lining construction
: 3.3.1 The mud grade used for kiln lining construction should match the selected refractory material; the refractory mud particle size requirements should be determined by the thickness requirements of the brick joints. The prepared refractory mud must have good and suitable construction performance. 3.3.2 Clay refractory mud
For the construction of clay refractory bricks, clay insulation fire bricks, and diatomaceous earth insulation products, clay refractory mud should be used, and its performance should meet the requirements of "Clay Refractory Mud" (GB/T14982) with a grade of NN-45A. The particle size requirement of refractory mud should be fine-grained refractory mud and blast furnace refractory mud.
3.3.3 High-alumina refractory mud
When laying high-alumina refractory materials, high-alumina refractory mud should be used, and its performance should meet the requirements of "High-alumina Refractory Mud" (GB/T2994) for grades LF-60 and LF-70. The particle size requirement of high-alumina refractory mud should be fine-grained refractory mud. 3.3.4 Mud for laying refractory castable precast blocks When laying kiln linings with refractory castable precast blocks, refractory mud of the same quality as the precast blocks should be used, and it should have a suitable mix ratio and consistency. When laying high-alumina cement refractory castable precast blocks, high-alumina cement slurry shall be used; when laying silicate cement refractory castable precast blocks, silicate cement slurry shall be used; when laying phosphate refractory castable precast blocks, phosphate slurry shall be used; when laying water glass refractory castable precast blocks, water glass slurry shall be used.
The raw material composition and mix ratio of the slurry used for laying the above-mentioned refractory castable precast blocks are shown in Table 3.3.4.
3.3.5·Mortar for laying red bricks
Mortar for laying red bricks in kiln linings can generally be cement-lime mortar or cement-clay mortar.
Table 3.3.4 Mortar for masonry of refractory castable precast blocks
Phosphoric acid slurry
Hydro-glass slurry
Materials and requirements
High alumina clinker powder
High lead cement (greater than No. 425)
Portland cement
Clay clinker powder
High alumina clinker powder (those less than 0.088mm should be greater than 80%)Industrial phosphoric acid (concentration 85%)
Clay clinker powder
Water glass (specific gravity 1.30~1.35)
Composition (weight %)
20～25bZxz.net
Add appropriate amount
Add appropriate amount
Add 16~～18
Add 15~～24
4 Masonry
4.1 Preparation before masonry
4.1.1 Before masonry of lime kiln, a reasonable masonry construction technology plan must be formulated to ensure the masonry quality of kiln lining.
4.1.2 The foundation, kiln shell and related steel structures and equipment of lime kiln shall be constructed and installed, meet the requirements of design drawings, and pass the inspection and sign the "Process Handover Certificate" before the masonry of kiln lining can be carried out.
The process handover certificate shall include the following contents: 1. The manufacturing inspection certificate and inspection record of the lime kiln shell; 2. The measurement record of the center line and control elevation after the kiln shell is installed; 3. The installation quality and welding quality record of the parts related to the kiln shell; 4. The acceptance record of the concealed project.
4.1.3 After the installation of the kiln shell is inspected and qualified, the control elevation shall be marked from bottom to top on its inner surface according to the requirements of the brick layer and brick joints as one of the means to ensure the quality of masonry. 4.1.4 The inner surface of the kiln shell shall be carefully cleaned, and the rust, oil and other debris on the surface shall be completely removed, and anti-corrosion paint shall be applied. 4.1.5 It shall be able to provide power, lighting, and water (usually drinking tap water) for mixing refractory mud and refractory castables that meet the requirements of masonry construction. 4.1.6 The horizontal and vertical transportation equipment required for masonry construction should be installed and ready, and have passed the test run. Special machinery such as mixers, brick cutters, brick grinders, vibrators, etc. for mud or castables should be installed and debugged to meet the use requirements. The equipment and machinery used for masonry should have complete operation and maintenance procedures, and be assigned a dedicated person to implement them.8 Other insulation materials for kiln linings
Other insulation materials for kiln linings can also be selected from slag wool, expanded perlite, etc. Their performance requirements should comply with the provisions of "Rock wool, slag wool and their products for insulation" (GB11835) and "Expanded perlite" (JC209) respectively. 3.2.9 Refractory castables and refractory castable preforms are used as refractory castables for kiln linings. Their technical performance should comply with the requirements for "cement refractory castables" and "inorganic refractory castables" in the provisions of "Clay and high-alumina 6
Refractory castables" (GB3712).
The size tolerance of refractory castable preforms should comply with the provisions of GB3712.
3.2.10 Sintered ordinary bricks (red bricks)
When red bricks are used for the outer layer of the kiln lining, their performance should meet the requirements of "Sintered Ordinary Bricks" (GB5101) with a bid number not less than 100 and a grade of first-class products. 3.3 Mud for kiln lining construction
: 3.3.1 The mud grade used for kiln lining construction should match the selected refractory material; the refractory mud particle size requirements should be determined by the thickness requirements of the brick joints. The prepared refractory mud must have good and suitable construction performance. 3.3.2 Clay refractory mud
For the construction of clay refractory bricks, clay insulation fire bricks, and diatomaceous earth insulation products, clay refractory mud should be used, and its performance should meet the requirements of "Clay Refractory Mud" (GB/T14982) with a grade of NN-45A. The particle size requirement of refractory mud should be fine-grained refractory mud and blast furnace refractory mud.
3.3.3 High-alumina refractory mud
When laying high-alumina refractory materials, high-alumina refractory mud should be used, and its performance should meet the requirements of "High-alumina Refractory Mud" (GB/T2994) for grades LF-60 and LF-70. The particle size requirement of high-alumina refractory mud should be fine-grained refractory mud. 3.3.4 Mud for laying refractory castable precast blocks When laying kiln linings with refractory castable precast blocks, refractory mud of the same quality as the precast blocks should be used, and it should have a suitable mix ratio and consistency. When laying high-alumina cement refractory castable precast blocks, high-alumina cement slurry shall be used; when laying silicate cement refractory castable precast blocks, silicate cement slurry shall be used; when laying phosphate refractory castable precast blocks, phosphate slurry shall be used; when laying water glass refractory castable precast blocks, water glass slurry shall be used.
The raw material composition and mix ratio of the slurry used for laying the above-mentioned refractory castable precast blocks are shown in Table 3.3.4.
3.3.5·Mortar for laying red bricks
Mortar for laying red bricks in kiln linings can generally be cement-lime mortar or cement-clay mortar.
Table 3.3.4 Mortar for masonry of refractory castable precast blocks
Phosphoric acid slurry
Hydro-glass slurry
Materials and requirements
High alumina clinker powder
High lead cement (greater than No. 425)
Portland cement
Clay clinker powder
High alumina clinker powder (those less than 0.088mm should be greater than 80%)Industrial phosphoric acid (concentration 85%)
Clay clinker powder
Water glass (specific gravity 1.30~1.35)
Composition (weight %)
20～25
Add appropriate amount
Add appropriate amount
Add 16~～18
Add 15~～24
4 Masonry
4.1 Preparation before masonry
4.1.1 Before masonry of lime kiln, a reasonable masonry construction technology plan must be formulated to ensure the masonry quality of kiln lining.
4.1.2 The foundation, kiln shell and related steel structures and equipment of lime kiln shall be constructed and installed, meet the requirements of design drawings, and pass the inspection and sign the "Process Handover Certificate" before the masonry of kiln lining can be carried out.
The process handover certificate shall include the following contents: 1. The manufacturing inspection certificate and inspection record of the lime kiln shell; 2. The measurement record of the center line and control elevation after the kiln shell is installed; 3. The installation quality and welding quality record of the parts related to the kiln shell; 4. The acceptance record of the concealed project.
4.1.3 After the installation of the kiln shell is inspected and qualified, the control elevation shall be marked from bottom to top on its inner surface according to the requirements of the brick layer and brick joints as one of the means to ensure the quality of masonry. 4.1.4 The inner surface of the kiln shell shall be carefully cleaned, and the rust, oil and other debris on the surface shall be completely removed, and anti-corrosion paint shall be applied. 4.1.5 It shall be able to provide power, lighting, and water (usually drinking tap water) for mixing refractory mud and refractory castables that meet the requirements of masonry construction. 4.1.6 The horizontal and vertical transportation equipment required for masonry construction should be installed and ready, and pass the test. Special machinery such as mixers, brick cutters, brick grinders, vibrators, etc. for mud or castables should be installed and debugged to meet the use requirements. The equipment and machinery used for masonry should have complete operation and maintenance procedures, and be assigned a dedicated person to implement them.1.3 After the installation of the kiln shell is inspected and qualified, the control elevation should be marked from bottom to top on its inner surface according to the requirements of the brick layer and brick joints as one of the means to ensure the quality of masonry. 4.1.4 The inner surface of the kiln shell should be carefully cleaned, and the rust, oil and other debris on the surface should be completely removed, and anti-corrosion paint should be applied. 4.1.5 It should be able to provide power, lighting, and water (usually drinking tap water) for mixing refractory mud and refractory castables that meet the requirements of masonry construction. 4.1.6 The horizontal and vertical transportation equipment required for masonry construction should be installed and qualified through trial runs. Special machinery such as mixers for mud or castables, brick cutters, brick grinders, vibrators, etc. should be installed and debugged to meet the requirements of use. The equipment and machinery used for masonry should have complete operation and maintenance procedures, and be assigned a dedicated person to implement them.1.3 After the installation of the kiln shell is inspected and qualified, the control elevation should be marked from bottom to top on its inner surface according to the requirements of the brick layer and brick joints as one of the means to ensure the quality of masonry. 4.1.4 The inner surface of the kiln shell should be carefully cleaned, and the rust, oil stains and other debris on the surface should be completely removed, and anti-corrosion paint should be applied. 4.1.5 It should be able to provide power, lighting, and water for mixing refractory mud and refractory castables (usually drinking tap water) that meet the requirements of masonry construction. 4.1.6 The horizontal and vertical transportation equipment required for masonry construction should be installed and qualified through trial runs. Special machinery such as mixers for mud or castables, brick cutters, brick grinders, vibrators, etc. should be installed and debugged to meet the requirements of use. The equipment and machinery used for masonry should have complete operation and maintenance procedures, and be assigned a dedicated person to implement them.
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