Some standard content:
ICS73.120
Machinery Industry Standard of the People's Republic of China
JB/T7895-1999
Permanent magnetic drum separator
Permanent magnetic drum separator1999-06-28 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T7895-1999
This standard is a revision of JB/T7895-95 "Permanent magnetic drum separator". During the revision, the original standard was edited and the main technical content remained unchanged.
Appendix A of this standard is a reminder appendix.
This standard replaces JB/T7895-95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The responsible drafting unit of this standard: Shenyang Mineral Processing Machinery Research Institute. The main drafters of this standard are: Xu Yongshan, Fu Jinbi, Li Jun, Sun Yan, Huang Jialin. This standard was first issued as GB5145-85 in May 1985 and adjusted to JB/T7895-95 in April 1996. Fan Guo
Machinery Industry Standard of the People's Republic of China
Permanent magnetic drum separator
Permanent magnetic drum separatorJB/T7895-1999
Replaces JB/T7895-95
This standard specifies the product classification, technical requirements, test methods, inspection rules, signs, labels, instruction manuals, packaging, transportation and storage of permanent magnetic simple magnetic separators.
This standard applies to permanent magnetic drum separators (hereinafter referred to as magnetic separators). The machine is suitable for separating strong magnetic minerals with a specific magnetic susceptibility of not less than 3000×10cm/g. It can enrich the strong magnetic minerals in the ore pulp, regenerate the magnetite powder by suspension, or remove magnetic impurities from other suspensions. For selection instructions, see Appendix A (suggestive appendix). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB191—1990
GB/T1720—1988
GB/T 3768—1996
GB/T 6388—1986
GB/T 9969.1—1988
GB/T 133061991bzxZ.net
JB/T 16041998
3 Product classification
3.1 Model
Packaging, storage and transportation, graphic mark
Determination of paint film adhesion
Acoustic sound pressure method Determination of noise source sound power level above the reflective surface, using the envelope measurement surface simple method Transport packaging Receiving and shipping mark
Industrial product instruction manual General
Mine mechanical product model compilation method
3.1.1 The magnetic system type of the magnetic separator is open, and the magnetic poles shall not be less than four poles. 3.1.2 The types of the tank body are divided into:
a) downstream type;
b) countercurrent type;
c) semi-countercurrent type.
3.2 Model
The product model representation method shall comply with the provisions of JB/T1604. 1 Approved by the State Bureau of Machinery Industry on June 28, 1999 and implemented on January 1, 2000
3.3 Marking example
JB/T7895-1999
Drum length, dm
Diameter of cylinder, dm (take the integer part)
Type: N is countercurrent type, B is semi-countercurrent type, S is downstream type weak magnetic cylinder type
Magnetic separation equipment
The countercurrent permanent magnet cylinder magnetic separator with a cylinder diameter of 750mm and a cylinder length of 1800mm is marked as: CTN-718 magnetic separator
3.4 Basic parameters and dimensions
The basic parameters and dimensions of the magnetic separator shall comply with the provisions of Table 1. Table 1 | |tt |
CTS-1024
CTN-1024||tt| |CTB-1218
CTS-1218
CTN-1218
CTB-1224
CTS-1224
CTN-1224
CTB-1230
CTS-1230
CTN-1230
Drum size
(diameter x length)
750x1200
750 × 1 800
1 050 x 1 800
1 050×2 400
1 200×1 800
1 200×2 400
1 200×3 000
Magnetic induction intensity
135(160*)
Processing capacity
52-100
82~120
80~150
Motor power
Note: The magnetic induction intensity indicated by * is the magnetic system made of magnetic materials with a magnetic energy product of not less than 28T·kA/m. Technical requirements
4.1 The magnetic separator shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 2
Total weight of the machine
4.2 The structure of the magnetic separator shall meet the following requirements: JB/T7895-1999
a) The magnetic system can be rotated at the required angle according to the specified position: b) The magnetic field of the magnetic system should not affect the normal operation or maintenance of the magnetic conductive parts outside the cylinder; c) The magnetic pole structure should not fall off during installation, transportation and use; d) The gap between the permanent magnetic cylinder and the trough body can be adjusted e) The seal of the permanent magnetic cylinder should ensure that no water or slurry leaks into the cylinder; the gap for discharging magnetic products can be adjusted;
Protect the bearings from slurry or dust penetration and prevent oil leakage; g)|| tt||When lubricating the bearing: do not remove the cylinder, do not disassemble the bearing seat; h)
i) The magnetic product can be cleaned or unloaded along the entire length of the permanent magnetic cylinder; j)
In order to facilitate the cleaning of the tank, there should be a channel leading to the inner cavity of the tank; k) The final sorted product should be easy to sample; 1) In order to achieve the selection or sweeping operation, multiple single machines can be combined; m) It can be connected to an automatic or remote control system;
n) The vulnerable parts and components can be replaced where the magnetic separator is installed; 0) When the magnetic separator is stopped, the main components and parts can be checked, and the operation of the cylinder and unloading device can be observed directly or indirectly. 4.3 The tank, concentrate tank and cylinder of the magnetic separator should have rubber or other wear-resistant layers. The bonding strength between rubber and metal should not be less than 1MPa, and delamination or shedding is not allowed. Other wear-resistant layers should be firm and reliable. 4.4 Welded parts such as cylinders, troughs, and ore receiving troughs shall not leak water, and all welds shall be free of defects such as pores and burn-through. The inner and outer welds of the cylinder shall be ground flat, and local protrusions shall not be higher than the surrounding surface by 0.5mm. 4.5 The cylinder shall be made of non-magnetic material, and the end cover shall be made of corrosion-resistant non-magnetic material. 4.6 The polarity of each pole of the magnetic system shall be the same along the axial direction and arranged alternately along the circumference. The yoke shall be made of low-carbon steel or electrical pure iron with excellent magnetic conductivity. The yoke and the shaft shall be connected with non-magnetic material. 4.7 The radial runout of the cylinder surface shall comply with the provisions of Table 2. Table 2
Cylinder diameter mm
Radial runout mm
4.8 All exposed non-machined metal parts are coated with two layers of primer and two layers of topcoat. The total thickness of the paint film shall not be less than 74μm, and the adhesion of the paint film shall not be lower than the second level in GB/T1720. The paint shall be evenly coated without defects such as paint peeling, flaking, cracks and flow marks. 4.9 All fasteners shall be bluing (or blackening). 4.10 The complete set supply scope of the magnetic separator shall include: a) a complete set of mechanical parts;
b) electric motor.
5 Test method
5.1 The main dimensions of the magnetic separator shall be checked with a universal measuring tool with a measurement error of no more than 1mm. 5.2 Perform an appearance inspection of the structural requirements of the magnetic separator. JB/T7895—1999
5.3 The application accuracy level of magnetic induction intensity shall not be less than 2.The value shall be determined by the radial component of the magnetic field on the cylinder surface relative to the geometric center of the magnetic poles using a 5-level Tesla meter and a probe with a thickness of no more than 2mm. The measurement shall be made on the magnetic poles in the attraction zone and the sweeping zone of the magnetic system and within a range of no less than 250mm from the end face of the magnetic system. 5.4 When checking the bonding strength and appearance quality of the rubber lining parts, the relevant certificates shall be checked and the appearance shall be inspected. 5.5 The inspection of the weld quality shall be carried out before painting or before gluing. The external defects of the weld and the surrounding sections shall be inspected for appearance and water leakage.
5.6 The material inspection of the cylinder and the end cover shall be carried out by checking the certificate. 5.7 The correctness of the magnetic system polarity shall be checked in the axial and circumferential directions using a Tesla meter. The yoke structure shall be inspected for appearance. 5.8 The radial runout of the cylinder surface shall be checked on any section of the cylinder surface using a measuring instrument with a measurement error of no more than 0.1mm. 5.9 The determination of the adhesion of the paint film shall be carried out in accordance with the provisions of GB/T1720. 5.10 The noise of the magnetic separator shall be tested in accordance with GB/T3768. 5.11
To check the sealing of the cylinder, the assembled cylinder shall be immersed in a water tank with a depth of not less than 1/3 of the cylinder diameter, and the cover shall be opened for inspection after running for 6 hours. 6 Inspection rules
6.1 Inspection classification
The magnetic separator is divided into factory inspection and type inspection. 6.2 Factory inspection
6.2.1 The magnetic separator shall be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped. When it leaves the factory, it shall be accompanied by documents proving the quality of the product. 6.2.2 The following items shall be inspected before leaving the factory:
a) The integrity and correctness of the structural requirements of the magnetic separator; b) The size, magnetic induction intensity and noise of the magnetic separator shall comply with the provisions of Table 1; c) The radial runout of the cylinder surface shall comply with the provisions of Table 2; d) The quality of the welds of the cylinder, trouser body and other welded parts; e) The quality of the rubber lining parts:
f) The quality of the painting:
g) The correctness of the magnetic polarity:
h) Carry out an idle running test to check the correctness of the interconnection between the parts and components of the magnetic separator. The idle running time should be no less than "h. 6.3 Type inspection
6.3.1 The magnetic separator should be subjected to type inspection in the following cases: a) When new products or old products are transferred to the factory for production and identification; b) After normal production, when there are major changes in product structure, materials, and processes; c) When the product is resumed after a long period of suspension; d) When the results of the final inspection are very different from those of the last inspection; e) The national quality inspection agency proposes type inspection requirements. 6.3.2 Type inspection items should include all requirements of this standard. 6.3.3 Sampling method
One unit of single-piece small batch production products is selected. 6.3.4 Judgment rules
JB/T7895—1999
All inspection items are only allowed to be inspected and evaluated during sampling. If any item fails, it should be Double the random inspection. 7 Markings, labels and instruction manuals
7.1 Each magnetic separator should have a product label fixed in an appropriate and obvious position. Its type and size should comply with the provisions of GB/T13306 and indicate the following contents:
a) Manufacturer's name and trademark:
b) Product name and model;
c) Main technical parameters:
Magnetic induction intensity, mT;
Processing capacity, t/h or m\/h;
Motor power, kw;
Total weight of the machine, t:
d) Factory number;
e) Date of manufacture.
7.2 The factory number of the magnetic separator should be marked on the shaft end of the permanent magnet cylinder. 7.3 A product instruction manual should be prepared for the magnetic separator. , and its content shall comply with the provisions of GB/T9969.1. 7.4 The packaging marks of the magnetic separator shall include the transport packaging delivery and receipt marks, the packaging storage and transportation graphic marks, and shall comply with the provisions of GB/T6388 and GB191.
8 Packaging, transportation and storage
8.1 The magnetic separator shall be packaged in a closed package, the closed box shall be ventilated and rainproof, and the parts and components shall be firmly fixed in the box. 8.2 The magnetic separator shall be accompanied by the following technical documents: a) Product certificate or quality certificate;
b) Product instruction manual:
c) Packing list;
d) Product general drawing and installation drawing.
8.3 There shall be obvious text markings on the wall of the closed box, and it shall comply with the provisions of 7.4, and its contents shall include: a) Name of the receiving station and receiving unit c) Contract number and product name and model: d) Gross weight, net weight, box number and dimensions: e) Center of gravity, lifting line, storage and transportation diagram. 8.4 The packaging and shipment of magnetic separators shall comply with the requirements of water and land transportation. 8.5 Magnetic separators shall be stored in warehouses or under sheds that can prevent direct sunlight and rain and snow from invading the packaging. 8.6 During storage and transportation, the magnetic system shall be in a natural drooping state and can swing freely. JB/T7895—1999
Appendix A
(Appendix of tips)
Selection instructions
Magnetic separators with a magnetic induction intensity of not less than 135mT in Table 1 are usually used for the fine selection section: magnetic separators with a magnetic induction intensity of not less than 160mT are used for the rough selection section.
A2 The two sets of values of processing capacity in Table 1, the former (measured in dry ore volume) is the processing capacity of the ore dressing plant for sorting magnetite or roasted hematite, which is obtained when the feed particle size is less than 1mm and the concentration is not more than 35%. The upper limit of the value is for sorting Anshan type magnetite, and the lower limit is for sorting roasted hematite. When processing other ores, it can be selected between the upper and lower limits. The latter (measured in slurry volume) is the maximum processing capacity of the coal washing plant when processing magnetite powder suspension. A3 Downstream type trough is suitable for sorting particle size not more than 6mm; semi-countercurrent type trough is suitable for sorting particle size not more than 1mm; countercurrent type trough is suitable for sorting particle size not more than 0.6mm.1 Each magnetic separator shall be equipped with a product label in an appropriate and obvious position. Its type and size shall comply with the provisions of GB/T13306 and indicate the following contents:
a) Manufacturer name and trademark:
b) Product name and model;
c) Main technical parameters:
Magnetic induction intensity, mT;
Processing capacity, t/h or m\/h;
Motor power, kw;
Total weight of the machine, t:
d) Factory number;
e) Manufacturing date.
7.2 The factory number of the magnetic separator shall be marked on the shaft end of the permanent magnet cylinder. 7.3 The magnetic separator shall be prepared with a product instruction manual, the contents of which shall comply with the provisions of GB/T9969.1. 7.4 The packaging marks of the magnetic separator shall include the shipping packaging receiving and delivery marks, packaging storage and transportation pictorial marks, and shall comply with the provisions of GB/T6388 and GB191.
8 Packaging, transportation and storage
8.1 The magnetic separator shall be packaged in a closed box, which shall be ventilated and rainproof, and the parts and components shall be firmly fixed in the box. 8.2 The magnetic separator shall be accompanied by the following technical documents: a) Product certificate or quality certificate;
b) Product instruction manual;
c) Packing list;
d) Product general drawing and installation drawing.
8.3 There should be obvious text markings on the closed box wall and should comply with the provisions of 7.4, including: a) The name of the receiving station and the receiving unit;
The shipping station and the shipping unit name;
c) Contract number and product name and model:
d) Gross weight, net weight, box number and overall dimensions: e) Center of gravity, lifting line, storage and transportation diagrams. 8.4 The packaging and shipment of the magnetic separator should comply with the requirements of water and land transportation. 8.5 The magnetic separator should be stored in a warehouse or under a shed that can prevent direct sunlight and rain and snow from invading the packaging. 8.6 During storage and transportation, the magnetic system should be in a natural drooping state and can swing freely. JB/T7895—1999
Appendix A
(Indicative Appendix)
Selection Instructions
The magnetic separators with magnetic induction intensity not less than 135mT in Table 1 are usually used in the concentrating section; the magnetic separators with magnetic induction intensity not less than 160mT are used in the coarse concentrating section.
A2 The two sets of values of processing capacity in Table 1, the former (measured in dry ore volume) is the processing capacity of the concentrator for selecting magnetite or roasted hematite when the feed particle size is less than 1mm and the concentration is not more than 35%. The upper limit of the value is for selecting Anshan type magnetite, and the lower limit is for selecting roasted hematite. When processing other ores, it can be selected between the upper and lower limits. The latter (measured in slurry volume) is the maximum processing capacity of the coal washing plant when processing magnetite powder suspension. A3 downstream trough is suitable for sorting particle size not larger than 6mm; semi-countercurrent trough is suitable for sorting particle size not larger than 1mm; countercurrent trough is suitable for sorting particle size not larger than 0.6mm.1 Each magnetic separator shall be equipped with a product label in an appropriate and obvious position. Its type and size shall comply with the provisions of GB/T13306 and indicate the following contents:
a) Manufacturer name and trademark:
b) Product name and model;
c) Main technical parameters:
Magnetic induction intensity, mT;
Processing capacity, t/h or m\/h;
Motor power, kw;
Total weight of the machine, t:
d) Factory number;
e) Manufacturing date.
7.2 The factory number of the magnetic separator shall be marked on the shaft end of the permanent magnet cylinder. 7.3 The magnetic separator shall be prepared with a product instruction manual, the contents of which shall comply with the provisions of GB/T9969.1. 7.4 The packaging marks of the magnetic separator shall include the shipping packaging receiving and delivery marks, packaging storage and transportation pictorial marks, and shall comply with the provisions of GB/T6388 and GB191.
8 Packaging, transportation and storage
8.1 The magnetic separator shall be packaged in a closed box, which shall be ventilated and rainproof, and the parts and components shall be firmly fixed in the box. 8.2 The magnetic separator shall be accompanied by the following technical documents: a) Product certificate or quality certificate;
b) Product instruction manual;
c) Packing list;
d) Product general drawing and installation drawing.
8.3 There should be obvious text markings on the closed box wall and should comply with the provisions of 7.4, including: a) The name of the receiving station and the receiving unit;
The shipping station and the shipping unit name;
c) Contract number and product name and model:
d) Gross weight, net weight, box number and overall dimensions: e) Center of gravity, lifting line, storage and transportation diagrams. 8.4 The packaging and shipment of the magnetic separator should comply with the requirements of water and land transportation. 8.5 The magnetic separator should be stored in a warehouse or under a shed that can prevent direct sunlight and rain and snow from invading the packaging. 8.6 During storage and transportation, the magnetic system should be in a natural drooping state and can swing freely. JB/T7895—1999
Appendix A
(Indicative Appendix)
Selection Instructions
The magnetic separators with magnetic induction intensity not less than 135mT in Table 1 are usually used in the concentrating section; the magnetic separators with magnetic induction intensity not less than 160mT are used in the coarse concentrating section.
A2 The two sets of values of processing capacity in Table 1, the former (measured in dry ore volume) is the processing capacity of the concentrator for selecting magnetite or roasted hematite when the feed particle size is less than 1mm and the concentration is not more than 35%. The upper limit of the value is for selecting Anshan type magnetite, and the lower limit is for selecting roasted hematite. When processing other ores, it can be selected between the upper and lower limits. The latter (measured in slurry volume) is the maximum processing capacity of the coal washing plant when processing magnetite powder suspension. A3 downstream trough is suitable for sorting particle size not larger than 6mm; semi-countercurrent trough is suitable for sorting particle size not larger than 1mm; countercurrent trough is suitable for sorting particle size not larger than 0.6mm.
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