Method for extracting white carbon black from shale vanadium extraction tailing residue

A technology for extracting vanadium tailings and white carbon black, applied in chemical instruments and methods, silica, inorganic chemistry, etc., can solve the problems of long production time, low leaching rate and difficult leaching of silica products, and achieve improved The effect of leaching rate, widening the source of raw materials, and solving stockpiling

Pending Publication Date: 2019-11-19
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is inappropriate to directly apply this process to the vanadium extraction tailings from vanadium shale, because the vanadium extraction tailings from vanadium shale are obtained from the shale vanadium extraction process, and there is an alkali leaching process in

Method used

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  • Method for extracting white carbon black from shale vanadium extraction tailing residue
  • Method for extracting white carbon black from shale vanadium extraction tailing residue
  • Method for extracting white carbon black from shale vanadium extraction tailing residue

Examples

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Embodiment 1

[0020] A method for extracting white carbon black from shale vanadium extraction tailings, said method comprising the steps of:

[0021] Step 1. Mix the vanadium extraction tailings with solid alkali and water to obtain a slurry. The mass ratio of the solid alkali to the vanadium extraction tailings is 1.5:1, and the solid-liquid ratio is 1:6;

[0022] Step 2. Raise the temperature of the slurry obtained in step 1 to 160° C., and control the reaction time to 120 minutes;

[0023] Step 3, after the reaction is completed, filter to obtain the filtrate and filter residue, adjust the pH value of the filtrate to 8, and obtain the silica gel;

[0024] Step 4, drying and grinding the silica gel obtained in step 3 to obtain white carbon black. The silica leaching rate can reach as high as 95.2%, and the specific surface area reaches 105m 2 / g. Detection of SiO in products 2 The content reaches more than 92.8%, and the main content of the product meets the requirements of the HG / T3...

Embodiment 2- Embodiment 5

[0026] The mass ratios of the solid alkali to the vanadium extraction tailings described in the examples 2-5 are 0.9:1, 1.2:1, 1.8:1, 2:1 respectively, and the other conditions are the same as in the example 1.

Embodiment 6- Embodiment 8

[0028] The solid-to-liquid ratios described in Example 6-Example 8 are 1:4, 1:8, and 1:10 respectively, and other conditions are the same as Example 1.

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Abstract

The invention provides a method for extracting white carbon black from shale vanadium extraction tailing residue. The method comprises: (1) mixing vanadium extraction tailing residue, a solid alkali and water to obtain a residue slurry, wherein a mass ratio of the solid alkali to the vanadium extraction tailing residue is 0.9-2:1, and a solid-liquid ratio is 1:4-10; (2) heating the obtained residue slurry to a temperature of 120-180 DEG C, and controlling the reaction time at 60-150 min; (3) after completing the reaction, filtering to obtain a filtrate and filter residue, and adjusting the pHvalue of the filtrate to 6-10 to obtain a silica gel; and (4) drying and grinding the obtained silica gel to obtain white carbon black. According to the present invention, the silica leaching rate canbe up to 95.2%, the reaction time can be greatly shortened, and can be within 60-150 min, the SiO2 content in the product can reach more than 92.8%, and the main content of the product reaches the industry standard.

Description

technical field [0001] The invention relates to the technical field of stone coal extraction and resource comprehensive utilization, in particular to a method for extracting white carbon black from shale vanadium extraction tailings. Background technique [0002] White carbon black is amorphous silicon dioxide. Also known as hydrated silica. Molecular formula is SiO 2 ·nH 2 O. It is a white, non-toxic, amorphous fine powder. It has excellent properties such as porosity, high dispersion, light weight, good chemical stability, high temperature resistance, non-combustibility and good electrical insulation. Silica is mainly used as a reinforcing agent and modifier in the rubber industry, and its reinforcing effect is better than other reinforcing fillers other than carbon black. Silica is also a raw material for industries such as plastics, papermaking, pesticides, coatings, and inks. At present, the manufacturing methods of white carbon black are divided into gas phase m...

Claims

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Application Information

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IPC IPC(8): C01B33/12C01B33/148
CPCC01B33/12C01B33/148C01P2006/12C01P2006/80C01P2004/03
Inventor 包申旭王顺张一敏
Owner WUHAN UNIV OF TECH
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