Method for increasing output of white carbon black in vanadium extraction through stone coal roasting and alkali leaching

A technology of white carbon black and stone coal, applied in the direction of silica, silicon oxide, etc., can solve the problems of low extraction rate of silica and underutilization of the potential of comprehensive utilization of stone coal, etc., to improve reaction efficiency and quality Effect

Inactive Publication Date: 2011-02-02
台泥(怀化)水泥有限公司
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Problems solved by technology

[0002] Extracting white carbon black in the vanadium extraction of stone coal blank roasting alkali is another invention application of the applicant, and

Method used

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Examples

Experimental program
Comparison scheme
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Example Embodiment

[0009] Example 1

[0010] The method of the present invention for increasing the output of white carbon black in vanadium by roasting alkali leaching of stone coal is:

[0011] a. Add 12% sodium hydroxide by mass to the calcined stone coal powder (that is, the particle size is below 20um), under the pressure of 0.6mpa and temperature of 170℃, stir and maintain for 2-4 hours to obtain water glass;

[0012] b. Use the water glass obtained in step a to routinely prepare white carbon black. The white carbon black filtrate and the white carbon black filter cake water washing liquid are used to extract vanadium.

Example Embodiment

[0013] Example 2

[0014] a. Add 10% sodium hydroxide by mass to the calcined stone coal powder (the particle size is below 20um, or above -160 mesh), and stir and maintain for 3 hours at a pressure of 0.2mpa and a temperature of 200℃ to obtain water glass;

[0015] b. Use the water glass obtained in step a to routinely prepare white carbon black. The white carbon black filtrate and the white carbon black filter cake water washing liquid are used to extract vanadium.

Example Embodiment

[0016] Example 3

[0017] a. Add 15% sodium hydroxide by mass to the calcined stone coal powder (that is, the particle size is below 20um), under the pressure of 1mpa and temperature of 180℃, stir and maintain for 2-4 hours to obtain water glass;

[0018] b. Use the water glass obtained in step a to routinely prepare white carbon black. The white carbon black filtrate and the white carbon black filter cake water washing liquid are used to extract vanadium.

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Abstract

The invention discloses a method for increasing the output of white carbon black in vanadium extraction through stone coal roasting and alkali leaching. In order to overcome the defects of low extraction amount of the white carbon black in the vanadium extraction through stone coal blank roasting and alkali leaching and the like, the method comprises the following steps of: adding sodium hydroxide into roasting stone coal powder in the mass ratio of 10-15%, and stirring for 24 h under the pressure of 0.2-1 MPa at the temperature of 120-200 DEG C to obtain water glass; and preparing white carbon black from the obtained water glass by using a conventional method, and extracting vanadium from the filtrate subjected to white carbon black extraction. When used for extracting the white carbon black in the vanadium extraction through stone coal roasting and alkali leaching, the method greatly improves reaction efficiency and quality, and the extraction rate of carbon dioxide in the stone coal reaches 35-40% and is increased by more than 7 times as compared with the prior art.

Description

technical field [0001] The invention relates to a method for increasing the extraction amount of white carbon black in vanadium leaching by baking soda of stone coal, in particular to a method for increasing the yield of white carbon black in soda leaching vanadium by roasting stone coal. Background technique [0002] Extracting white carbon black in the vanadium extraction of stone coal blank roasting alkali is another invention application of the applicant, and its disadvantage is that the extraction rate of silicon dioxide in stone coal is low, only 5%, making the stone coal comprehensive The potential of utilization is underutilized. Contents of the invention [0003] The purpose of the present invention will overcome above-mentioned weak point exactly, provide a kind of method that improves the production of white carbon black in the vanadium leaching of stone coal roasting alkali quantity. [0004] For achieving the above object, technical scheme of the present inv...

Claims

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Application Information

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IPC IPC(8): C01B33/12C22B34/22
Inventor 彭忠喜
Owner 台泥(怀化)水泥有限公司
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