Method for recovering valuable metals in carbon black

A recovery method and carbon black technology, applied in chemical instruments and methods, inorganic chemistry, vanadium compounds, etc., can solve the problems of high cost, low metal recovery rate, and difficulty in metal recovery, avoiding pollution and solving single-variety problems. Effect

Pending Publication Date: 2022-02-22
刘虎
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a method for recovering valuable metals in carbon black, which can not only solve the difficult and high-cost problems of recovering a large amount of metals in carbon black, but also solve the problems of metals in the prior art. The problem of single recycling species and low metal recovery rate

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  • Method for recovering valuable metals in carbon black

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Effect test

Embodiment 1

[0020] like figure 1 Shown, a kind of recovery method of valuable metal in carbon black comprises the steps:

[0021] 1) Water-containing carbon black is press-filtered, heated and dehydrated to a water content of 5%;

[0022] 2) Calcining the carbon black at 600° C. for 4 hours to remove flammable impurities such as carbon and sulfur in the carbon black to obtain ash rich in metallic nickel, vanadium and molybdenum;

[0023] 3) adding sodium hydroxide solution and stirring and leaching, the leaching temperature is 80°C, the leaching time is 3h, after washing and filtering, a solution containing molybdenum and vanadium and a nickel-containing residue are obtained;

[0024] 4) Add sulfuric acid to the nickel-containing residue to dissolve and leach the nickel, the leaching temperature is 85°C, and the leaching time is 2.5h; after leaching, filter, add sodium hydroxide to the filtrate to adjust the solution pH to 9.0, and the nickel Form precipitation, precipitation temperatur...

Embodiment 2

[0029] like figure 1 Shown, a kind of recovery method of valuable metal in carbon black comprises the steps:

[0030] 1) Water-containing carbon black is press-filtered, heated and dehydrated to a moisture content of 1.5%;

[0031] 2) Mix the dehydrated carbon black and sodium carbonate uniformly at a ratio of 1:1, roast at 550°C for 4 hours, remove flammable carbon, sulfur and other impurities in the carbon black, and obtain ash rich in metal nickel, vanadium and molybdenum;

[0032] 3) add water and stir for leaching, the leaching temperature is 85°C, the leaching time is 3h, after washing and filtering, a solution containing molybdenum and vanadium and a nickel-containing residue are obtained;

[0033] 4) Add sulfuric acid to the nickel-containing residue to dissolve and leach the nickel. The leaching temperature is 80°C, and the leaching time is 3 hours; Precipitation, precipitation temperature 50°C, precipitation time 2.5h;

[0034] 5) adding ammonium chloride to the m...

Embodiment 3

[0038] like figure 1 Shown, a kind of recovery method of valuable metal in carbon black comprises the steps:

[0039] 1) Water-containing carbon black is press-filtered, heated and dehydrated to a moisture content of 2.0%;

[0040] 2) Mix the dehydrated carbon black and sodium carbonate uniformly at a ratio of 1:0.5, roast at 700°C for 3 hours, remove flammable carbon, sulfur and other impurities in the carbon black, and obtain ash rich in metal nickel, vanadium and molybdenum;

[0041] 3) add water and stir for leaching, the leaching temperature is 85°C, the leaching time is 3h, after washing and filtering, a solution containing molybdenum and vanadium and a nickel-containing residue are obtained;

[0042] 4) Add sulfuric acid to the nickel-containing residue to dissolve and leach the nickel. The leaching temperature is 80°C, and the leaching time is 3 hours; Precipitation, precipitation temperature 50°C, precipitation time 2.5h;

[0043] 5) adding ammonium sulfate to the ...

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Abstract

The invention discloses a method for recovering valuable metals in carbon black. The method is characterized in that: valuable metals such as nickel, vanadium and molybdenum in byproduct carbon black of an oil-to-gas gasifier, a flexible coking device and the like are recovered through treatment procedures of drying, roasting, leaching, precipitating and the like, so that environmental pollution caused by incineration of the carbon black as solid waste is avoided. The recovery rate of the valuable metals molybdenum, nickel and vanadium in the carbon black is 92-98.5%, and the method has the advantages of being wide in raw material source, high in valuable metal recovery rate, environmentally friendly and the like.

Description

technical field [0001] The invention relates to the field of metal recovery, in particular to a method for recovering valuable metals in carbon black. Background technique [0002] With the increasing deterioration of crude oil, efficient and clean conversion and optimized utilization of heavy oil are major issues to ensure energy security and sustainable development of the national economy and society, and the utilization of heavy oil residue is one of the key issues. Hydrogen production by gasification of heavy oil residues has attracted more and more attention from major refineries due to its good economic benefits, flexible raw materials, and clean products. During the gasification of heavy oil, a large amount of carbon black will be produced as a by-product. At present, carbon black is mainly treated as solid waste incineration, and a large amount of valuable metals nickel, vanadium, and molybdenum in carbon black cannot be recycled. If the metal nickel, vanadium, and ...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B1/02C22B23/00C22B34/22C22B34/34C01G53/04C01G39/00C01G31/00
CPCC22B7/007C22B1/02C22B23/043C22B34/22C22B34/34C01G53/04C01G39/00C01G31/00
Inventor 刘虎胡友超陈慧群
Owner 刘虎
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