Bidirectional tosh grinding ultra-fine crashing objects and its method

Abstract

The present invention discloses a bidirectional-rotating ball-milling ultra-fine crushing device and the method thereof. The device is arranged with a jacket which is provided with cooling water; a closed material storing warehouse which closes the feeding / discharging material opening is arranged at the lower end of the barrel body; a vacuum pumping valve which is connected with the vacuum pumping device is arranged at random feeding / discharging cover plate on the barrel body; and an inner lining is arranged at the inner surface of the barrel body. The bidirectional-rotating ball-milling ultra-fine crushing method is doing vacuum pumping to the inner side of the barrel body and actuating the transmission device to do ultra-fine crushing when the raw material above 80 mu is added into the barrel body, wherein the rotary speed of the barrel is 40 to 70 rotation / minute and the rotary speed of the inner rotating axle is 20 to 40 rotation / minute; the mass of the grinding ball gradation phi between 5 to 10mm accounts for 35% to 55% of the total grinding ball mass, phi between 10 to 20mm accounts for 25% to 35% of the total grinding ball mass and the phi between 20 to 30mm accounts for 20% to 35% of the total grinding ball mass; and the mass ratio of the material ball is 1:4 to 1:15. The invention has the advantages of short producing time, low energy consumption and reduced producing cost, and the invention overcomes the fine particle problems of easy aggregation to block and fusing-aggregation, etc.

Description

A technical field [0001] The invention belongs to the superfine pulverization technology, in particular to a bidirectional rotating ball mill superfine pulverization device and method for hard, tough, inflammable and explosive special materials. Two background technology [0002] At present, the military and civilian fields urgently need to superfine many special materials that are hard, tough and flammable, such as Qinggang charcoal, sulfur, oxidizer, RDX, ignition agent, adamantine, red phosphorus, metal silicon, aluminum, magnesium, copper, iron , quartz stone, strontium titanate, polishing powder and Chinese herbal medicine Ganoderma lucidum, etc. for dry ultrafine (micron or nanometer in a dry state) or wet ultrafine. [0003] As we all know, it is very difficult to ultrafine the above materials in a dry state. The main technical problem is that these materials are hard and tough. At present, the existing ultrafine technology and equipment in China cannot provide strong...

AI Technical Summary

Problems solved by technology

[0003] As we all know, it is very difficult to ultrafine the above materials in a dry state. The main technical problem is that these materials are hard and tough. At present, the existing ultrafine technology and equipment in China cannot provide strong impact force and strong shear force at the same time. , strong friction and strong extrusion force, so it cannot be ultrafine; in addition, when these materials are ultrafinely pulverized in a dry state, the fine particles are very easy to stick to each other and agglomerate and grow again (called reverse crushing), and most of these materials when their particles reach the micron, submicron or nanometer level are very easy to oxidize with oxygen in the air, spontaneously ignite or generate a lot of static electricity and heat during the ultra-fine process, so in the ultra-fine It is very easy to burn or explode during the ultra-fine process, and the safety issues in the ultra-fine process cannot be guaranteed

However, there are also problems such as pollution, loud noise, and danger caused by the heating of the cylinder during the process of collecting crushed materials.

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