A preparation system and process of tungsten carbide powder

Abstract

The invention discloses a preparation system of tungsten carbide powder, which comprises left and right swinging ball milling equipment. The preparation process includes: putting tungsten ore and carbon black into the grinding cylinder through the feed port; the grinding cylinder swings left and right to make the grinding balls inside the inner cylinder shake violently, which enhances the grinding effect and makes the mixing even; The negative pressure device pumps negative pressure on the inner cylinder to extract the ground and mixed tungsten powder and carbon powder for the subsequent calcination process; when the motor stops rotating, the goose beak wheel stops rotating and the grinding cylinder stops swinging. At this time, it is in standby mode. state. The present invention provides a left and right swing ball mill equipment. The left and right swing motion mode can reduce the influence of the centrifugal force on the grinding ball and the material powder, reduce the accumulation of the material powder, increase the movement track of the grinding ball, and increase the contact area of ​​the grinding ball to the material powder. Thereby enhancing the grinding effect; it also plays a role in stir-frying the material powder, avoiding the accumulation of material powder, and increasing the contact area between the grinding ball and the material powder. Ultimately, the grinding effect is improved.

Description

A preparation system and process of tungsten carbide powder technical field [0001] The present invention relates to the field of tungsten carbide preparation, in particular to a preparation system and process of a tungsten carbide powder. Background technique [0002] The preparation of the existing tungsten carbide powder is mainly by ball mill grinding and mixing. The main ball mills on the market The grinding form is rotary ball mill, including but not limited to vertical rotary ball mill, horizontal rotary ball mill, planetary ball mill, etc. Whichever type is described, the grinding ball and the powder will be affected by centrifugal force and move in the same direction in the grinding cylinder, and the movement trajectory is single, so that the It is difficult for the grinding ball to contact more powder, and the powder tends to accumulate under the influence of centrifugal force, which increases the thickness of the powder. At the same grinding time, the effect...

AI Technical Summary

Problems solved by technology

At present, the main grinding form of ball mills on the market is rotary ball mill, including but not limited to vertical rotary ball mill, horizontal rotary ball mill, planetary ball mill, etc., but no matter which type is mentioned above, the grinding balls and powder will be affected by centrifugal force in the grinding cylinder The inner movement direction is the same, and the movement trajectory is single, which makes it difficult for the grinding ball to touch more powder, and the powder is prone to accumulation due to the influence of centrifugal force, which increases the thickness of the powder, so that the ball cannot touch the powder at the bottom. Under the same grinding time, the effect of grinding and mixing has an upper limit, and it is difficult to further improve, so it will inevitably lead to poor calcination effect of subsequent tungsten carbide, and it is difficult to further improve the quality of tungsten carbide produced.

Images