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A method of recovering metal elements from spent catalysts

A technology for waste catalysts and metal elements, applied in the direction of improving process efficiency, can solve the problems of short process flow, complicated operation, long process flow, etc., and achieve the effect of short process flow, simple operation, clean cost and environmental protection

Active Publication Date: 2018-11-06
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the existing waste catalyst treatment methods, such as long process flow and complicated operation, and provide a method for recovering metal elements from waste catalysts with short process flow and simple operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This example is used to illustrate the method of the present invention for recovering metal elements from spent catalysts.

[0055] (1) 1000g spent hydrogenation catalyst (the content of nickel element is 10.7% by weight, the content of cobalt element is 0.3% by weight, the content of tungsten element is 1.6% by weight, the content of molybdenum element is 0.9% by weight, the content of vanadium element 5.1% by weight, the content of carbon element is 27.4% by weight, the content of sulfur element is 8.6% by weight, the content of alumina is 25% by weight), 940g of ferrous laterite ore (the content of iron element is 45% by weight), 191g of Silicon, 316g of calcium oxide, 60g of coke powder (the content of carbon element is 86% by weight) and 100g of calcium fluoride were smelted by fire method at 1570°C for 2 hours, and the alloy was extracted. The recovery rate of nickel obtained in this step was 99.79%, and the recovery of cobalt The recovery rate of molybdenum is 99...

Embodiment 2

[0061] This example is used to illustrate the method of the present invention for recovering metal elements from spent catalysts.

[0062](1) 1000g spent hydrogenation catalyst (the content of nickel element is 3.44% by weight, the content of cobalt element is 1.48% by weight, the content of tungsten element is 0.73% by weight, the content of molybdenum element is 5.84% by weight, the content of vanadium element 0.54% by weight, the content of carbon element is 28% by weight, the content of sulfur element is 7% by weight, the content of alumina is 28% by weight), 1500g ferrous laterite ore (the content of iron element is 47% by weight), 306g of Silicon, 350g of calcium oxide, 160g of coke powder (the content of carbon element is 89% by weight) and 30g of sodium fluoride were smelted by fire method at 1650°C for 1.5h, and the alloy was extracted. This step obtained a nickel recovery of 99.4%, cobalt The recovery rate was 99.29%, the recovery rate of molybdenum was 99.78%, the r...

Embodiment 3

[0068] This example is used to illustrate the method of the present invention for recovering metal elements from spent catalysts.

[0069] (1) 1000g spent hydrogenation catalyst (the content of nickel element is 4.89% by weight, the content of cobalt element is 1.28% by weight, the content of tungsten element is 1.95% by weight, the content of molybdenum element is 3.95% by weight, the content of vanadium element 2.11% by weight, the content of carbon element is 28% by weight, the content of sulfur element is 9% by weight, the content of alumina is 39.8% by weight), 1180g irony laterite ore (the content of iron element is 45% by weight), 352g of Silicon, 398g calcium oxide, 100g coke powder (the content of carbon element is 85% by weight), 100g calcium fluoride were smelted by fire method at 1600°C for 3 hours, and the alloy was extracted. The recovery rate of nickel obtained in this step was 99%, and the recovery rate of cobalt was The recovery rate of molybdenum is 99%, the ...

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PUM

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Abstract

The invention relates to a method for recovering metal elements from a waste catalyst. The waste catalyst contains the nickel element, the cobalt element, the tungsten element, the molybdenum element and the vanadium element. The method for recovering the metal elements from the waste catalyst comprises the steps that (1) the waste catalyst, iron-containing materials, a cosolvent and coke are smelted through a pyrogenic process at the temperature of 1550-1800 DEG C, so that an iron alloy containing the nickel element, the cobalt element, the tungsten element, the molybdenum element and the vanadium element is obtained, wherein the cosolvent is one or more of fluoride of alkaline metal, fluoride of alkaline-earth metal and carbonate of alkaline metal; and (2) the iron alloy obtained in the step (1) is treated for extracting the nickel element, the cobalt element, the tungsten element, the molybdenum element and the vanadium element. According to the method for recovering the metal elements from the waste catalyst, the way that the alloy is formed through high-temperature smelting is adopted, so that the nickel element, the cobalt element, the tungsten element, the molybdenum element and the vanadium element in the waste catalyst can be well extracted; and the technological process is short, operation is easy, the cost is low, and cleanliness and environmental friendliness are guaranteed.

Description

technical field [0001] The invention relates to a method for recovering metal elements from spent catalysts. Background technique [0002] With the advancement of modern science and technology, human demand for high-tech materials is increasingly inseparable from the development of petroleum and chemical industries. Among them, the use of catalyst has played a huge role in the rapid development of petroleum industry and chemical industry. According to statistics, the annual consumption of catalysts in the world is about 800,000 tons, including about 415,000 tons of refining catalysts and 335,000 tons of chemical catalysts. [0003] However, with the prolongation of the use time of the catalyst, due to the change of its own components and structure, the activity of the catalyst will eventually decrease or become invalid, so it cannot be used any longer, and it has to be replaced with a new catalyst, thus producing a large amount of spent catalyst. If these waste catalysts a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B23/00C22B34/22C22B34/34C22B34/36
CPCY02P10/20
Inventor 王成彦李强刘志坚曹光伟尹飞胡学武苑志伟殷喜平蒋绍洋伊红亮
Owner CHINA PETROLEUM & CHEM CORP