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Method for recycling metal from waste catalyst containing molybdenum and nickel

A waste catalyst and metal technology, applied in the field of nickel, recycling molybdenum-containing and aluminum compounds, can solve the problems of low recovery rate, high processing cost, low nickel purity, etc., and achieves simple process, low energy consumption, and complete reaction. Effect

Active Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methods mentioned above generally focus on the recycling of a single metal, and some processes are very complicated.
[0005] In the existing molybdenum and nickel-containing waste catalyst recovery technology, there are deficiencies such as low recovery rate of molybdenum and nickel or low purity of molybdenum and nickel. In order to achieve high product quality, some processes need to use ion exchange or extraction processes. The process is very cumbersome and the processing cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 100 g of 3996 waste hydrogenation catalyst (3996 is a heavy distillate oil hydrocracking pretreatment catalyst developed and produced by Fushun Petrochemical Research Institute) was roasted at 350° C. for 3 hours, and then crushed to 120 mesh after cooling. 88.4 g was obtained, and the contents of molybdenum and nickel (by weight of oxide) were analyzed to be 22.9% and 3.1%, respectively. Mix with alkaline matter, the weight ratio of sodium carbonate and spent catalyst is 1:1 (weight is about 88g), the weight ratio of sodium bicarbonate and spent catalyst is 0.5:1 (weight is about 44g), the weight ratio of sodium hydroxide and spent catalyst is The weight ratio is 0.1:1 (the weight is about 9g). The powder after mixing was pulverized and calcined at 650° C. for 10 hours, and the weight of the powder after cooling was 213.6 g. The volume of the mixed acid solution prepared is 2100mL, wherein the concentration of sulfuric acid is 10%, the concentration of nitric acid is ...

Embodiment 2

[0035]100 g of the 3996 waste hydrogenation catalyst was calcined at 500° C. for 3 hours, and then pulverized to 120 mesh after cooling. Obtained 79.6g, the content of molybdenum and nickel (based on oxide weight) was analyzed to be 23.7% and 3.6%, respectively. Mix with alkaline matter, the weight ratio of sodium carbonate and spent catalyst is 2:1 (weight is about 160g), the weight ratio of sodium bicarbonate and spent catalyst is 0.2:1 (weight is about 16g), the weight ratio of sodium hydroxide and spent catalyst is The weight ratio is 0.2:1 (the weight is about 16g). The powder after mixing was pulverized and calcined at 600° C. for 10 hours, and the weight of the powder after cooling was 252.6 g. The volume of the mixed acid solution prepared is 2500mL, wherein the concentration of sulfuric acid is 20%, the concentration of nitric acid is 5%, and the concentration of citric acid is 2%. Heat the mixed acidic solution to 90°C, add the roasted mixed powder, stir and impreg...

Embodiment 3

[0037] 100 g of the 3996 waste hydrogenation catalyst was calcined at 450° C. for 4 hours, and then pulverized to 120 mesh after cooling. 78.0 g was obtained, and the contents of molybdenum and nickel (by weight of oxide) were analyzed to be 23.8% and 4.1%, respectively. Mix with alkaline matter, the weight ratio of sodium carbonate and spent catalyst is 1:1 (weight is about 80g), the weight ratio of sodium bicarbonate and spent catalyst is 0.5:1 (weight is about 40g), the weight ratio of sodium hydroxide and spent catalyst is The weight ratio is 0.1:1 (the weight is about 8g). The powder after mixing was pulverized and calcined at 700° C. for 10 hours, and the weight of the powder after cooling was 191.6 g. The volume of the mixed acid solution prepared is 1900mL, wherein the concentration of sulfuric acid is 15%, the concentration of nitric acid is 3%, and the concentration of citric acid is 1%. Heat the mixed acidic solution to 110°C, add the roasted mixed powder, stir an...

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Abstract

The invention relates to a method for recycling metals from a waste catalyst containing molybdenum and nickel, which comprises the following steps of: roasting and smashing the waste catalyst containing the molybdenum and nickel; mixing with an alkaline substance and roasting; leaching by using a mixed acid liquid; depositing by using an alkaline solution, wherein molybdenum is deposited out in the form of ammonium molybdate; further dissolving the ammonium molybdate by using ammonia water; regulating a pH value to obtain ammonium molybdate deposition; and drying to obtain an ammonium molybdate product. The method is particularly suitable for extracting high-purity ammonium molybdate from the aluminum-based waste catalyst containing the molybdenume, and has the advantages of simple process, strong operability, low energy consumption, and stable produced product quality.

Description

technical field [0001] The invention relates to a method for recycling molybdenum, nickel and aluminum compounds from waste catalysts containing molybdenum and nickel, in particular to a method for recycling molybdenum and nickel from waste catalysts containing molybdenum and nickel. technical background [0002] With the development of industry, the human demand for petroleum and petrochemical products is increasing day by day, and the amount of catalysts used to produce various products is also increasing day by day. Especially in recent years, the requirements of various environmental protection laws and regulations have become increasingly stringent, making the production of clean fuels increasingly prominent, and hydrogenation technology in the field of oil refining has developed rapidly. The rapid development of hydrogenation technology has brought about a rapid increase in the demand for hydrogenation catalysts. For the continuous growth of catalyst usage, people als...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B34/34C22B23/02C22B21/00C22B1/02C22B3/04C22B3/46
CPCY02P10/20
Inventor 陈光高玉兰徐黎明杨宏李崇慧
Owner CHINA PETROLEUM & CHEM CORP
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