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Inspection Rules for Light Burned Magnesium Powder

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Inspection Rules for Light Burned Magnesium Powder

Date of release:2018-04-26 Author: Click:

Inspection Rules for Light Burned Magnesium Powder




GB 5069 Magnesium Refractories Chemical Analysis Method




General Regulations on Packaging, Marking and Quality Certificate of Metallurgical and Mineral Products GB 5689




classification


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Light burnt magnesia powder can be divided into nine grades according to chemical composition: QM-96, QM-95, QM-94, QM-92, QM-90, QM-87, QM-85, QM-80 and QM-75.




technical requirement




Physical and chemical indicators should meet the requirements of Table 1.




test method




5.1 Chemical analysis was carried out according to GB 5069.




5.2 Particle size was determined by international standard sieving test, i.e. 120 meshes and 100 meshes were tested by international standard sieving test with aperture of 0.125 mm and 0.15 mm, respectively.




Inspection Rules




6.1 The weight of each batch of finished product is less than 120 t.




6.2 Samples for particle size determination should be sampled before group batches, and samples for chemical analysis should be sampled after group batches. Samples were taken in small bags (25kg) for every 20 bags and in large bags (1000kg).




After fully mixing the obtained particle size samples, the particle size was determined by point sampling of 10-20g. The mixed samples were reduced to 200 g and sent to the laboratory for analysis.




6.3 If a chemical composition is unqualified or abnormal, double quantity of samples will be re-examined in the same batch of products, and the re-examination results will be the final inspection results of the batch of products.


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