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Device and method for recovering nickel element and aluminum element

A technology for aluminum and nickel elements, which is applied in the field of recovery of metal elements in catalysts, can solve the problems of poor separation effect and low recovery rate of metal elements, and achieve the goals of shortening recovery cycle, improving utilization rate, separation rate and recovery rate Effect

Active Publication Date: 2021-07-16
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide a kind of device and the method of reclaiming nickel element and aluminum element, to solve prior art from deactivation or unqualified catalyst The method of recovering metal elements has the problems of poor separation effect of metal elements and low recovery rate

Method used

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  • Device and method for recovering nickel element and aluminum element
  • Device and method for recovering nickel element and aluminum element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] The schematic diagram of the device structure and the schematic diagram of the process flow for the recovery of nickel and aluminum elements used in this embodiment are shown in figure 1 and figure 2 .

[0077] Pretreatment: Put 1000g of deactivated nickel-based-alumina catalyst into the abrasive device 810 through the first feed port, and carry out the grinding treatment of the material, and grind the above-mentioned catalyst to 100 mesh to obtain the finished abrasive. Abrasive enters into the material mixing device 820 through the material mixing inlet, and sodium hydroxide enters into the material mixing device 820 through the alkali adding port at the same time to carry out the mixing treatment of the materials, and obtain the mixed material after processing.

[0078] Roasting treatment: All the above mixed materials enter the rotary kiln through the inlet of the material to be processed, and at the same time, 1100g of sodium hydroxide enters the rotary kiln thro...

Embodiment 2

[0087] The difference with Example 1 is: during the roasting process, the ratio of the deactivated nickel-based alumina catalyst to sodium hydroxide is 1:1.6; the leaching rate of nickel element is 0.5%, and the leaching rate of aluminum element is 97%; the recovery rate of nickel element is 95%, and the total recovery rate of aluminum element is 95%.

Embodiment 3

[0089] The difference with Example 1 is: the roasting temperature in the rotary kiln is set to be 800°C, and the roasting time is 1.5h; the leaching rate of nickel element is recorded as 0.35%, and the leaching rate of aluminum element is 97.5%; the recovery rate of nickel element is 97%, and the total recovery rate of aluminum element is 95.5%.

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Abstract

The invention provides a device and method for recovering a nickel element and an aluminum element. The device comprises a roasting device, a leaching unit, a hydrolysis unit and a drying device; the roasting device is provided with an alkali inlet, a to-be-treated material inlet and a roasted product outlet; the leaching unit is provided with a roasted product inlet, at least one leaching agent inlet, at least one leachate outlet and a nickel-containing solid-phase product outlet, and the roasted product inlet communicates with the roasted product outlet through a roasted product conveying pipeline; the hydrolysis unit is provided with a leachate inlet, a first water adding opening and a first aluminum hydroxide discharging opening, and the leachate inlet communicates with the leachate outlet through a leachate conveying pipeline; and the drying device is used for dehydrating aluminum hydroxide to form aluminum oxide. The device is compact in design, meanwhile, the technological process is simple, the recovery period of the metal elements can be shortened, and the separation rate and recovery rate of the metal elements are increased; the device and the method are high in adaptability; and the production cost can be reduced, and the economic benefit is improved.

Description

technical field [0001] The invention relates to the field of recovery of metal elements in catalysts, in particular to a device and method for recovery of nickel and aluminum elements. Background technique [0002] The current petrochemical, high-tech industry, military industry and pharmaceutical fields all need to use catalysts to accelerate the reaction process. With the prolongation of the use time, the composition and structure of the catalyst itself have changed, the surface of the catalyst has continuously adsorbed organic carbon, and the metal has been burned, and the loss of active components has caused the catalytic activity of the catalyst to decline or fail, so that it cannot continue to be used. A large amount of spent catalyst is produced. If these waste catalysts are not disposed of, on the one hand, enterprises need to build hazardous waste warehouses to store catalysts, which will increase the production costs of enterprises; on the other hand, valuable met...

Claims

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Application Information

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IPC IPC(8): C22B1/02C22B7/00C22B21/00C22B23/00
CPCC22B1/02C22B7/006C22B21/0023C22B23/0407Y02P10/20
Inventor 李涛张杰磊孙宁磊殷书岩秦明晓赵鹏飞
Owner CHINA ENFI ENGINEERING CORPORATION