Production method of heavy calcium carbonate

Abstract

The invention provides a production method of heavy calcium carbonate. The specific starting sequence is as follows: in a grinding process, starting a grader and increasing the speed to 100-300 revolutions, starting a fan and increasing the speed to 100-300 revolutions, and finally starting a main machine and increasing the speed to 100-300 revolutions; increasing the rotating speed alternately according to 100-300 revolutions per time until the constant speed is reached; the specific shutdown sequence is as follows: firstly, reducing the speed of the main machine by 100-300 revolutions, then reducing the speed of the fan by 100-300 revolutions, and finally, reducing the speed of the grader by 100-300 revolutions; that is,, reducing the rotating speed alternately according to 100-300 revolutions every time until the rotating speed is stopped. According to the production method of heavy calcium carbonate, the grader and the main machine are accelerated and decelerated in turn in a step-by-step acceleration and step-by-step deceleration mode, so that the situation that coarse particles generate can be effectively avoided, the dust problem can be solved, the coarse particles are not generated, and accurate control can be realized through automatic control.

Description

technical field [0001] The invention relates to the field of heavy calcium carbonate production, in particular to a production method of heavy calcium carbonate. Background technique [0002] Calcium carbonate powder is the most widely used filler at present, especially the ground calcium carbonate produced by grinding method is the most widely used, because the calcium carbonate powder produced by grinding method has low cost and relatively simple process. However, the calcium carbonate produced by the grinding method is prone to coarse particles (coarse particles generally refer to particles more than 10 times larger than normal particles), which severely limits the application of heavy calcium carbonate. [0003] The heavy production process is to crush the calcium carbonate stones and send them to the main machine for grinding, and then pass through the classifier for classification, so as to obtain products with powder particle sizes that meet the requirements. The hig...

AI Technical Summary

Problems solved by technology

[0004] In the process of producing heavy calcium carbonate, the production startup sequence is: classifier start → constant speed → fan → constant speed → main engine, the main purpose of this startup method is to prevent the generation of coarse particles, which will seriously affect the heavy calcium carbonate The use of calcium carbonate (hereinafter referred to as "heavy calcium") reduces the quality of heavy calcium, but this startup sequence is when the fan has not started, and with the speed of the classifier speeding up, the positive pressure in the host and the system is also increasing. , a large amount of dust will be sprayed out, and the dust will be reduced only when the fan starts to a certain speed, but a large amount of dust has been generated; a large amount of dust is also generated when the fan is stopped

Thereby polluting the environment and seriously affecting the health of field workers

It is well known in the industry that this method pollutes the environment, but in order to ensure the quality of heavy calcium products, it can only damage the environment, so the environmental problems of the heavy calcium production industry have always been prominent

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