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Mud phosphor recovery and refining method

A refining method and sludge phosphorus recovery technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of low phosphorus content, low yield of sludge phosphorus recovery, poor product color, etc., and achieve high phosphorus content , good chroma, reduce the effect of cohesion

Inactive Publication Date: 2009-04-22
胡晓丽 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above problems such as low yield of sludge phosphorus recovery, poor product chroma and low phosphorus content, a large number of studies on the characteristics of sludge phosphorus are carried out, and a sludge with high recovery yield of sludge phosphorus, good product color and high phosphorus content is provided. Phosphorus recovery and refining method

Method used

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  • Mud phosphor recovery and refining method
  • Mud phosphor recovery and refining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Put the mud phosphorus into the rotary phosphorus steaming pot, the filling amount of the mud phosphorus accounts for 30% to 40% of the capacity of the rotary phosphorus steaming pot, add ammonium chloride with a weight of 2‰ of the mud phosphorus to the mud phosphorus, mix evenly, and start steaming , When steaming, the temperature in the furnace is 260℃~300℃, and the steaming time is 3 hours. After the elemental phosphorus is evaporated, it is collected in the phosphorus receiving tank. This is crude phosphorus, and the slag is removed after natural cooling for 2 hours. In this process, the heating furnace should be heated evenly to avoid the uneven temperature distribution leading to the agglomeration of sludge phosphorus and the conversion of yellow phosphorus into red phosphorus, which will affect the recovery rate and quality of phosphorus.

[0018] 2) Fill the water tank with water, input steam to heat the water to 60°C;

[0019] 3) Send the crude phosphorus c...

Embodiment 2

[0023] 1) Put the mud phosphorus into the rotary phosphorus steaming pot, the filling amount of the mud phosphorus accounts for 30% to 40% of the capacity of the rotary phosphorus steaming pot, add ammonium chloride with a weight of 5‰ of the mud phosphorus to the mud phosphorus, mix evenly, and start steaming , When steaming, the temperature in the furnace is 260℃~300℃, and the steaming time is 4 hours. After the elemental phosphorus is evaporated, it is collected in the phosphorus receiving tank. This is crude phosphorus, and the slag is removed after natural cooling for 2 hours. In this process, the heating furnace should be heated evenly to avoid the uneven temperature distribution leading to the agglomeration of sludge phosphorus and the conversion of yellow phosphorus into red phosphorus, which will affect the recovery rate and quality of phosphorus.

[0024] 2) Fill the water tank with water, input steam to heat the water to 75°C for later use;

[0025] 3) Send the crud...

Embodiment 3

[0029] 1) Put the mud phosphorus into the rotary phosphorus steaming pot, the filling amount of the mud phosphorus accounts for 30% to 40% of the capacity of the rotary phosphorus steaming pot, add diatomite with a weight of 4‰ of the mud phosphorus to the mud phosphorus, mix evenly, and start steaming , The temperature in the furnace is 260°C to 300°C during steaming, and the steaming time is 3.5 hours. After the elemental phosphorus is evaporated, it is collected in the phosphorus receiving tank. This is crude phosphorus, and the slag is removed after natural cooling for 2 hours. In this process, the heating furnace should be heated evenly to avoid the uneven temperature distribution leading to the agglomeration of sludge phosphorus and the conversion of yellow phosphorus into red phosphorus, which will affect the recovery rate and quality of phosphorus.

[0030] 2) Fill the water tank with water, input steam to heat the water to 70°C for later use;

[0031] 3) Send the crud...

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Abstract

The invention discloses a new recycling and refining method of sludge phosphor, which comprises the following steps: placing sludge phosphor in the rotary phosphor distilling furnace to recycle phosphor; adding dispersant; transmitting rough phosphor into phosphor-fused groove; inputting steam in the phosphor-fusing groove to remove fluorine; transmitting phosphor into refined groove; aerating hot water; heating to bleach; transmitting phosphor into product groove to obtain the yellow phosphorus.

Description

(1) Technical field: [0001] The invention relates to a method for recovering and refining mud phosphorus, which belongs to a waste utilization method, in particular to a chemical product waste utilization method. (two) background technology: [0002] Poor mud phosphorus is the waste residue produced by the electric furnace method of industrial yellow phosphorus production. The reason for its formation is: in the process of phosphorus production by electric furnace method, the furnace gas contains 50-150g / m 3 At present, most manufacturers do not have electrostatic precipitator equipment, and the furnace gas directly enters the phosphorus collection system without purification. After the phosphorus-containing furnace gas enters the phosphorus collection system, the phosphorus is wrapped by silica and carbon particles with strong adsorption. Sludge phosphorus is formed, they have high dispersibility, and form emulsion when contacting with water, so sludge phosphorus is a sphe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/027C01B25/047
Inventor 郭朝珍胡晓丽
Owner 胡晓丽
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