This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of feldspar for daily-use ceramics. This standard applies to feldspar products for daily-use ceramics. QB/T 1636-1992 Feldspar for daily-use ceramics QB/T1636-1992 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China
Feldspar for daily-use ceramics
Subject content and scope of application
QB/T1636-1992
This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of feldspar for daily-use ceramics.
This standard applies to feldspar products for daily-use ceramics. 2 Reference standards
GB/T4734 Chemical analysis method for aluminum silicate for daily-use ceramics ZBY20001 Determination method for moisture content of daily-use ceramic mud, mud and glaze slurry ZBY20002 Determination method for sieve residue of daily-use ceramic mud and glaze slurry 3 Product classificationwww.bzxz.net
Feldspar for daily-use ceramics is divided into potassium feldspar and sodium feldspar according to mineral composition. 3.1
3.2 According to product state, it is divided into block and powder. 4 Technical requirements
4.1 According to the quality requirements, it is divided into superior products, first-class products and qualified products. 4.2 Appearance quality
4.2.1 The block product should be free of obvious mica and other impurities, and no serious iron pollution. The appearance is usually flesh-red, white, and light yellow. 4.2.2 After the product is satin-sintered at 1350C, the superior and first-class products are transparent or milky white glass, and the qualified products are transparent or light yellow glass. 4.3 The particle size of feldspar products shall be agreed upon by the supply and demand parties. 4.4 The moisture content of feldspar powder shall not exceed 2%. If it exceeds, it shall be deducted in the measurement. 4.5 The chemical composition of the product shall comply with the provisions of Table 1. Table 1
Potassium feldspar
Albite feldspar
Superior product
Qualified product
Superior product
First-class product
Qualified product
Fe2();+TiO2
Ministry of Light Industry of the People's Republic of China approved 430 on 1993-01-15
Qualified net
Chemical composition, %
≥10. 00
Various standards and industry information materials are available in the United States
K,0>Na,0
Implementation on September 1, 1993
5 Test method
5.1 The chemical composition shall be determined in accordance with GB/T4734.
QB/T 1636 -- 1992
5.2 The burning test is carried out in an electric furnace, and the temperature is kept at 1350c for 30min. 5.3 The particle size is determined according to ZBY20002.
5.4 The moisture content is determined according to ZBY20001.
5.5 The appearance color is identified by eye.
6 Inspection rules
Each batch of products must be inspected and qualified by the inspection department of the production unit before it can be released. When leaving the factory, a product quality certificate must be attached. 6.2 Products are formed into batches according to the same category and the same grade. 6.3 Sample collection
6.3.1 For bagged products, sample bags are drawn from the product batch according to the provisions of Table 2, and 1kg of sample is drawn from each sample bag, mixed evenly, and divided into the required sample size according to the quartering method. Table 2
Batch, packing
Sample size, Wei
26~150
151~1 200
1 20135 000
≥35 001
6.3.2 Bulk products should be sampled by grid method or square method, not less than 10kg, crushed and divided into four parts to the required sample size for the test items.
6.4 Products are tested according to technical requirements. If one item does not meet the standard requirements (except moisture content), re-sampling and re-testing should be carried out. If there are still items that do not meet the standard requirements, the batch of products shall be judged as unqualified. 6.5 If it is judged as an unqualified batch after inspection, the batch of products shall be reprocessed by the supplier before it can be submitted for inspection again. 7 Marking, packaging, transportation, storage
7.1 Products must be packaged in bags, and the weight error shall not exceed 1%. 7.2 The packaging bag should indicate the product name, trademark, grade, particle size, weight, date of manufacture, production unit and address. 7.3 Strictly transport and store according to product type and grade to prevent product contamination. Additional notes:
This standard is proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Ceramic Standardization Center. This standard is drafted by the Hunan Ceramics Research Institute. The main drafters of this standard are Luo Degao, Dai Muqian and Liu Chunyang. From the date of implementation of this standard, the original Ministry of Light Industry standard QB902-1983 "Feldspar for Daily Ceramics" will be invalid. 431
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