Manufacturing method of talc
I. Introduction
Talc is a kind of non-metallic mineral powder widely used in the field of raw materials for chemical production, which has excellent properties such as high whiteness, high purity, high chemical inertness, low thermal conductivity, high covering power, and so on, and thus is widely used in many fields such as plastics, coatings, ceramics, paper making, medicine, cosmetics and so on. In this paper, we will introduce the manufacturing method of talcum powder, including raw material selection, crushing, grading, surface treatment and other aspects.
II, raw material selection
manufacture of talcum powder raw materials are mainly talc ores, should choose good quality, stable composition, ore structure close to the ore as raw materials. In the process of raw material selection, need to strictly control the content of radioactivity, heavy metals and other harmful substances in the ore to ensure product quality.
three, crushing
crushing is the key link in the manufacture of talcum powder, through the crushing of talcum ore can be turned into micro-fine powder. Crushing equipment can choose Raymond mill, air mill, ball mill, etc., the specific choice of which equipment needs to be based on the product fineness and output to decide. In the crushing process, you need to control the rotational speed of the crusher, feed speed and other parameters to ensure that the product size distribution and fineness meet the requirements.
Four, grading
Grading is the process of separating the particle size of the crushed talcum powder in order to obtain products of different particle sizes. Commonly used grading equipment are air classifier, mechanical classifier and so on. In the process of grading, the parameters of the classifier need to be adjusted according to the requirements of the particle size of the product to ensure that the particle size distribution of the product meets the requirements.
V. Surface treatment
In order to improve the dispersibility, fluidity and other properties of talcum powder, it is necessary to carry out surface treatment of talcum powder. Commonly used surface treatment methods include coating treatment, modification treatment and so on. Coating treatment can coat a layer of organic matter on the surface of talcum powder to improve its compatibility with organic matter; modification treatment can change the polarity of the surface of talcum powder to improve its compatibility with polar substances.
Sixth, packaging and storage
The manufactured talcum powder needs to be packaged and stored. Packaging process needs to choose suitable packaging materials and methods according to the characteristics of the product to ensure that the product will not be contaminated and damaged during transportation and use. The storage process needs to pay attention to moisture-proof, sun-proof, fire prevention and other measures to ensure product quality.
VII, quality control
In the process of manufacturing talcum powder, the quality of each link needs to be strictly controlled to ensure that the quality of the final product meets the requirements. It is necessary to establish a perfect quality management system to comprehensively monitor all aspects of raw material selection, crushing, grading, surface treatment, packaging and storage, etc., so as to find and solve problems in time.
VIII, environmental protection and sustainable development
In the process of manufacturing talcum powder, need to focus on environmental protection and sustainable development. Effective measures should be taken to reduce the emission of dust, noise and other pollutants, reduce energy consumption and improve resource utilization. At the same time, green production processes and equipment should be actively promoted to improve the environmental awareness and social responsibility of enterprises.
IX.Conclusion
In conclusion, the manufacturing method of talcum powder includes many links such as raw material selection, crushing, grading, surface treatment, etc., and it is necessary to strictly control the quality of each link to ensure that the quality of the final product meets the requirements. At the same time, it should pay attention to environmental protection and sustainable development, promote green production processes and equipment, and improve the environmental awareness and social responsibility of enterprises.
