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Method for producing yellow phosphorus with phosphor residue slag and ground phosphate rock

The technology of mud phosphorus slag and phosphate rock powder is applied in the field of yellow phosphorus production, which can solve the problems of wasting resources and polluting the environment, and achieves the effects of saving resources, increasing the content of SiO2, and low cost.

Inactive Publication Date: 2015-09-23
CHENGDU LESHI CHEM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It wastes resources and pollutes the environment

Method used

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  • Method for producing yellow phosphorus with phosphor residue slag and ground phosphate rock

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1 Utilizes the method for producing yellow phosphorus with sludge phosphorus slag and phosphate rock powder

[0020] with P 2 o 5 content of 15%, C content of 15%, SiO 2 3.35 tons of sludge phosphorus slag with a content of 36%, P 2 o 5 6.48 tons of phosphorus concentrate with a content of 30%, adding a binder of 1% of the total weight of sludge phosphorus slag and phosphorus concentrate to obtain a mixed material, pressing the mixed material into balls with a pressure of 19MPa, and sieving to obtain For phosphate rock pellets with a diameter of 5mm-30mm, the phosphate rock pellets are dried at 1000°C and consolidated by a consolidation machine, then mixed with 0.76 tons of coke, and finally sent to a yellow phosphorus electric furnace to react to obtain yellow phosphorus.

[0021] The compressive strength of finished phosphate rock pellets is 87kg / cm 2 , The drum index is 86%. A profit of 255 yuan will be realized per ton of mud phosphorus slag. The a...

Embodiment 2

[0022] Embodiment 2 The method for producing yellow phosphorus by utilizing sludge phosphorus slag and phosphate rock powder

[0023] with P 2 o 5 content of 20%, C content of 12%, SiO 2 3.46 tons of sludge phosphorus slag with a content of 32%, P 2 o 5 5.72 tons of phosphate rock powder with a content of 30%, adding a binder of 3% of the total weight of sludge phosphorus slag and phosphate concentrate to obtain a mixed material, which is pressed into balls with a pressure of 4MPa, and sieved to obtain Phosphate rock pellets with a diameter of 5mm-30mm are dried at 180°C and consolidated by a consolidation machine, then mixed with 0.85 tons of white coal, and finally sent to a yellow phosphorus electric furnace to react to produce yellow phosphorus.

[0024] The compressive strength of finished phosphate rock pellets is 87kg / cm 2 , The drum index is 86%. The profit of each ton of mud phosphorus slag will be 340 yuan. According to the annual processing of 500 tons of slu...

Embodiment 3

[0025] Embodiment 3 The method for producing yellow phosphorus by utilizing sludge phosphorus slag and phosphate rock powder

[0026] with P 2 o 5 content of 17%, C content of 13.5%, SiO 2 3.51 tons of sludge phosphorus slag with a content of 33%, P 2 o 5 6.01 tons of phosphorus concentrate with a content of 30%, adding a binder of 14.7% of the total weight of sludge phosphorus slag and phosphorus concentrate to obtain a mixed material, adding 0.76 tons of coking coal powder to the mixed material, and using a pressure of 15MPa The ball briquetting machine presses the mixed material into balls, screens and obtains phosphate rock pellets with a diameter of 5mm-30mm, and then sends the phosphate rock pellets to the yellow phosphorus electric furnace for reaction after being dried at 1200°C and consolidated by a consolidation machine. Produce yellow phosphorus.

[0027] The compressive strength of finished phosphate rock pellets is 87kg / cm 2 , The drum index is 86%. A profi...

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Abstract

The invention provides a method for producing yellow phosphorus with phosphor residue slag and ground phosphate rock. The phosphor residue slag and the ground phosphate rock are mixed according to the proportion being 1:1.0-3.0, a binder is added, a mixed material is obtained, the mixed material is equalized to be pressed into pallets, drying and solidification on the pallets are carried out, and the pallets are fed into a yellow phosphorus electric furnace for preparing the yellow phosphorus. By means of the method, comprehensive utilization of resources is achieved, environment pollution is reduced, and the aim of comprehensively using the phosphor residue slag and the ground phosphate rock is effectively achieved.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method for producing yellow phosphorus by utilizing sludge phosphorus slag and phosphorus rock powder. Background technique [0002] During the production process of yellow phosphorus, due to the different sources of raw materials and the control conditions of the phosphorus furnace, 20kg-50kg of sludge phosphorus slag is produced per ton of yellow phosphorus. According to statistics, P in mud phosphorus slag 2 o 5 The content is 15%-20%, the C content is 12%-15%, SiO 2 The content is 32%-36%. Calculated according to the price of raw materials input into yellow phosphorus production, its P 2 o 5 , C, SiO 2 The value of the three major active ingredients is 200-300 yuan / ton. At present, most of the sludge and phosphorus slag are not rationally utilized, and are directly dumped or landfilled as waste. [0003] Based on a 10,000-ton / year yellow phosphorus plant, the annual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/027
Inventor 罗宗恬
Owner CHENGDU LESHI CHEM ENG
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