Novel preparation technology for mixture taking water as grinding medium

Abstract

The invention relates to novel preparation technology for a mixture taking water as a grinding medium. The novel preparation technology contains working procedures such as batching, wet grinding, unloading, slurry drying and the like, wherein in the working procedure of the wet grinding, distilled water is adopted as the grinding medium, and 2 to 3 percent of antioxidant substance is added into the distilled water; in the working procedure of unloading, the mixture is unloaded from a wet grinder and passes through a 320-mesh sieve, and the wet grinder is washed for 6 times by water; and in the working procedure of slurry drying, an open type spray drying tower is adopted for drying, slurry is output to a nozzle for atomization by a pump, fog drops move from the bottom up, encounter the hot air which moves from the top down, and then are dried and a material flows out of the tower and is loaded into a material barrel after the automatic cooling. The preparation technology can effectively eliminate potential safety hazard, and save a large amount of energy sources; and the preparation technology does not need fire prevention and explosion prevention, adopts open type spray drying equipment, saves one half of equipment investment, does not need chilled water and nitrogen, and greatly reduces the cost for production operation.

Description

technical field [0001] The invention relates to a new process for preparing water as a grinding medium mixture. technical background [0002] Cemented carbide is composed of tungsten carbide, titanium carbide, cobalt, nickel, iron, etc. When making the mixture, in order to make the ingredients fully blended and ground finely, ball milling must be carried out, and 200CC~300CC / KG grinding is added to improve the ball milling efficiency Wet milling with liquid, the ball milling time is usually 20-100 hours, because tungsten carbide, titanium carbide, cobalt, nickel, iron, etc. are all powdery and very fine (usually 0.5-5μ), they are very easy to oxidize during the ball milling process, for To prevent oxidation of materials such as tungsten carbide and cobalt, anhydrous substances such as alcohol, hexane, acetone, or gasoline are usually used as grinding media during ball milling. In order to prevent the material from being oxidized during the drying process and recover the exp...

AI Technical Summary

Problems solved by technology

[0003] 1. Unsafe, even if the plant and equipment used are strictly safe, there are still potential safety hazards, because alcohol, or hexane, or acetone, or gas oil are flammable and explosive products

[0004] 2. The manufacturing process needs to consume a lot of energy, about 60KG of alcohol per ton

[0005] 3. In order to obtain high-quality mixed materials with stable bulk density and good flow, closed circulation spray drying equipment must be used for production. The investment in equipment is large, and 3 million units are agreed (domestic).

[0006] 4. Plants and equipment must be strictly fire-proof and explosion-proof, and the investment is large

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