In the production process of Molai powder, we need to pay attention to the following key links and matters to ensure product quality and production safety:

I. Selection and treatment of raw materials

High-purity raw materials: select high-purity aluminosilicate minerals (such as kaolinite content greater than 90%) as the main raw materials to reduce the impact of impurities on product quality.

Pretreatment: pretreat raw materials such as crushing, screening and drying to ensure uniform particle size of raw materials and meet production process requirements.

II. Ingredients and mixing

Accurate proportion: strictly control the proportion of raw materials, especially the proportion of Al₂O₃ and SiO₂. Generally, the Al₂O₃/SiO₂ ratio should be between 2.55 and 3.40 to ensure the formation of mullite phase.

Uniform mixing: ensure that the raw materials are evenly mixed, and the mixing time should be long enough to avoid uneven components.

III. Calcination and sintering

Temperature control: the calcination temperature should be controlled at 1100 ~ 1500℃, the sintering temperature is generally 1200 ~ 1300℃, and the heating rate is suggested to be 2 ~ 4℃/min.

Time control: the calcination time is generally 1 ~ 4 hours, and the sintering time is usually 3 ~ 6 hours.

Atmosphere control: In the process of calcination and sintering, the mixing of impurity gas should be avoided to reduce the generation of impurities.

IV. Screening and shaping

Particle size control: the calcined materials are screened by screening equipment to ensure that the particle size distribution of Mo Lai powder meets the requirements.

Shaping treatment: shaping the calcined material to remove impurities and improve the shape and size of the product.

V. Quality control

Chemical analysis: chemical analysis of raw materials and finished products is carried out regularly to ensure that the contents of main components such as Al₂O₃ and SiO₂ meet the standards.

Physical testing: testing the physical properties of products such as particle size distribution, fire resistance and expansion coefficient.

Finished product inspection: carry out strict quality inspection on the final products to ensure that they meet the industry standards.

VI. Safety and environmental protection

Dust control: In the production process, effective dust control measures should be taken to avoid the impact of dust on the environment and the health of operators.

High temperature protection: Operators should wear appropriate protective equipment when working near high temperature equipment.

Waste disposal: properly dispose of the waste generated in the production process to ensure that it meets the requirements of environmental protection.

VII. Equipment maintenance

Regular inspection: Conduct regular inspection and maintenance of production equipment (such as crusher, sieve, calciner, etc.) to ensure the normal operation of the equipment.

Fault prevention: find and solve equipment faults in time to avoid production interruption caused by equipment problems.

VIII. Packaging and storage

Moisture-proof and dustproof: Molai powder should be stored in a dry and clean environment to avoid moisture and pollution.

Packaging specification: adopt appropriate packaging methods (such as 25kg plastic woven bag or kraft paper bag) and ensure that the packaging is firm.

By strictly controlling the above links, the production quality and efficiency of Molai powder can be effectively improved, and the safety and environmental protection of the production process can be ensured at the same time.