Method for rapidly preparing red lead by means of air flow

Abstract

The invention discloses a method for rapidly preparing red lead by means of air flow. The method is achieved by combining a ground-to-air missile type red lead energy-saving oxidation furnace, that is to say, the flow velocity of air in the oxidation furnace is increased through air supply, and the air pressure in the oxidation furnace is increased by means of in-and-out air pressure difference, so that the purpose of increasing oxygen in the oxidation furnace is achieved, and the purpose of rapidly preparing the red lead is achieved. According to the method for rapidly preparing the red lead by means of the air flow, solar thermal energy and inexhaustible natural wind are effectively utilized, a red lead produce is rapidly prepared, the production cost is reduced, the production efficiency is improved, environmental pollution is avoided, and energy resources are greatly saved; more importantly, the production process is cleaner and safer, and fatal potential safety hazards are eliminated.

Description

technical field [0001] The invention relates to the technical field of red lead processing, in particular to a method for rapidly preparing red lead by using air flow. Background technique [0002] At present, the industrial production method of red lead at home and abroad is mainly to heat and melt the electrolytic lead, then ball mill and pulverize it, and then undergo natural roasting and oxidation at a temperature of 300°C to generate PBO, and then undergo natural oxidation at a high temperature of 500°C to obtain Pb 3 o 4 That is, red lead products, even the most advanced "dry and wet new process" to produce red lead, have to go through the stages of roasting and calcination. Disadvantages of the traditional method: due to the high temperature in the roasting chamber and the oxidation chamber, there is insufficient oxygen, which cannot meet the oxidation demand of the lead material. Only by prolonging the oxidation time can the red lead product be obtained. The energy ...

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Problems solved by technology

Disadvantages of the traditional method: due to the high temperature in the roasting chamber and the oxidation chamber, there is insufficient oxygen, which cannot meet the oxidation demand of the lead material. Only by prolonging the oxidation time can the red lead product be obtained. The energy consumption is too large, the production cost is high, and the production efficiency is high. Low

[0003] In order to speed up the oxidation reaction in the traditional red lead production process, a certain proportion of solid ammonium nitrate is added to the oxidation furnace. As we all know, "solid ammonium nitrate" will occur under the condition of high temperature, high pressure and the presence of oxidizable substances. Explosion, so the traditional red lead production process has a major safety hazard; at the same time, it is the raw material for the preparation of explosives. If it is mismanaged or stolen and flowed to the society, it will endanger public safety or be used for other illegal purposes to cause other harm.

For example, the Chinese patent "Method for quickly preparing red lead by using an intelligent oxygen supply device" (CN201410216814.9) discloses that the oxygen produced by an intelligent oxygen supply device is diluted, compressed, preheated, transported and other processes to meet the requirements of lead grains. Oxidation required conditions, to achieve the purpose of rapid preparation of red lead, this method obviously increases the production process, increases the production cost

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