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A kind of preparation method of yellow phosphorus

A yellow phosphorus and pure phosphorus technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve environmental problems, resources, waste and other problems, and achieve the effect of reducing emissions, reducing emissions, and achieving significant environmental benefits

Inactive Publication Date: 2017-09-15
GUIZHOU KAILIN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to provide a kind of preparation method of yellow phosphorus, to solve the environmental problem and resource waste problem that the amount of mud phosphorus discharged in the existing yellow phosphorus production method is relatively large and brings

Method used

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  • A kind of preparation method of yellow phosphorus
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Examples

Experimental program
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Effect test

Embodiment 1

[0022] A method for preparing yellow phosphorus, which is to send phosphate rock, anthracite and silicon ore to the ore washing system for washing, remove the dust in the phosphorus rock, anthracite and silicon ore, and make the phosphorus rock, anthracite and silicon ore The dust content of the ore is 3%, and then the phosphate rock, anthracite and silicon ore are sent to the dryer respectively, and baked at 400 ° C for 15 minutes. The moisture content of the phosphate rock is 1.5%, and the moisture content of the anthracite is The moisture content of silicon ore is 1.5%, and the moisture content of silicon ore is 4%. Then, the fine powder of phosphate rock, anthracite and silicon ore are mixed in the electric furnace according to the mass ratio of 1:0.25:0.15. The temperature is controlled at 1400 °C, and the reaction time is 1h, obtain furnace gas and slag, slag is discharged by electric furnace, furnace gas is sent in cooling tower, after cooling under the effect of spray w...

Embodiment 2

[0026] A method for preparing yellow phosphorus, which is to send phosphate rock, anthracite and silicon ore to the ore washing system for washing, remove the dust in the phosphorus rock, anthracite and silicon ore, and make the phosphorus rock, anthracite and silicon ore The dust content of the ore is 2%, and then the phosphate rock, anthracite and silicon ore are sent to the dryer respectively, and the temperature of 450 ℃ is used for drying for 10 minutes. The moisture content of the phosphate rock is 0.5%, and the moisture content of the anthracite is 0.5%, the moisture content of silicon ore is 0.5%, then the fine powder of phosphate rock, anthracite and silicon ore is sent into the electric furnace according to the mass ratio of 1:0.35:0.2 and mixed, the control temperature is 1500 ℃, and the reaction time is 2h, obtain furnace gas and slag, slag is discharged by electric furnace, furnace gas is sent in cooling tower, after cooling under the effect of spray water, obtain ...

Embodiment 3

[0030] A method for preparing yellow phosphorus, which is to send phosphate rock, anthracite and silicon ore to the ore washing system for washing, remove the dust in the phosphorus rock, anthracite and silicon ore, and make the phosphorus rock, anthracite and silicon ore The dust content of the ore is 1.5%, and then the phosphate rock, anthracite and silicon ore are sent to the dryer respectively, and baked at 420°C for 12 minutes. The moisture content of the phosphate rock is 1%, and the moisture content of the anthracite is The water content of silicon ore is 1%, and the moisture content of silicon ore is 2%. Then, the fine powder of phosphate rock, anthracite and silicon ore is sent into the electric furnace according to the mass ratio of 1:0.3:0.17 and mixed. The temperature is controlled at 1450°C, and the reaction is 1.5h Finally, the furnace gas and slag are obtained, and the slag is discharged through the electric furnace. The furnace gas is sent into the cooling towe...

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Abstract

The invention discloses a method for preparing yellow phosphorus, which comprises washing, washing and drying phosphate rock, anthracite and silicon ore respectively, sending them into an electric furnace for mixing according to a certain ratio, and carrying out oxidation-reduction reaction at a certain temperature. Send the obtained furnace gas into the cooling tower, and after cooling under the action of spray water, the obtained crude phosphorus enters the phosphorus receiving tank for the first sedimentation, and then sends the crude phosphorus into the refining pot for the second sedimentation , and then heat, stir and clarify with steam in the refining pot, deposit pure phosphorus at the bottom of the pot, cool and form the pure phosphorus to obtain yellow phosphorus products, and send the mud phosphorus after the pure phosphorus is separated into the mud phosphorus tank for the second step Three times of sedimentation, followed by liquid-solid separation to obtain yellow phosphorus. The present invention increases the output of yellow phosphorus products by subjecting the crude phosphorus to sedimentation for three times, and obtains remarkable economic benefits; at the same time, it greatly reduces the discharge of mud phosphorus, and obtains remarkable environmental protection benefits.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method for preparing yellow phosphorus. Background technique [0002] Yellow phosphorus, also known as white phosphorus, is a white to light yellow brittle waxy solid. Yellow phosphorus can be used to produce phosphoric acid, which is widely used in the military to produce smoke bombs and incendiary bombs due to its flammable property of producing smoke and fog. In the production of yellow phosphorus in Guizhou, most manufacturers use anthracite as a reducing agent, because anthracite contains 6-9% organic matter, which is commonly referred to as coal tar. During the reduction reaction process of yellow phosphorus production, the volatile substances in the anthracite escape together with the furnace gas, and are wrapped and deposited in the phosphorus receiving tank together with the furnace gas and dust in the cooling tower. The pulp is quickly sent to the refining...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/027
Inventor 朱永王元江吴良均樊国辉
Owner GUIZHOU KAILIN GRP CO LTD