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A method for preparing 13x by using acid leaching slag of laterite nickel ore and bauxite as raw materials

A technology of laterite nickel ore and acid leaching slag, which is applied in the fields of environment, materials and chemical industry, can solve the problem of high raw material prices and achieve the effect of simple equipment

Inactive Publication Date: 2016-07-06
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the preparation of commercial zeolite 13X is restricted by the source of raw materials, and the price of raw materials is relatively high

Method used

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  • A method for preparing 13x by using acid leaching slag of laterite nickel ore and bauxite as raw materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The acid leaching slag of laterite nickel ore, bauxite and sodium hydroxide were mixed according to the molar ratio of sodium to silicon n(Na 2 O) / n(SiO 2 ) is 1.4:1, the molar ratio of silicon to aluminum n(SiO 2 ) / n(Al 2 o 3 ) is 3:1 and mixed evenly, and reacted with alkali at 650°C for 1h, and then according to the water-sodium molar ratio n(H 2 O) / n(Na 2 O) add water in an amount of 30:1 to obtain a suspension; transfer the obtained suspension to a hydrothermal reaction kettle for crystallization at 60°C for 24 hours, cool to room temperature, filter, wash and dry, and finally obtain a zeolite 13X.

Embodiment 2

[0021] The acid leaching slag of laterite nickel ore, bauxite and sodium hydroxide were mixed according to the molar ratio of sodium to silicon n(Na 2 O) / n(SiO 2 ) is 1.6:1, the molar ratio of silicon to aluminum n(SiO 2 ) / n(Al 2 o 3 ) was 3.5:1 and mixed evenly, and reacted with alkali at 600°C for 2h, and then according to the water-sodium molar ratio n(H 2 O) / n(Na 2 O) add water in an amount of 40:1 to obtain a suspension; transfer the obtained suspension to a hydrothermal reaction kettle for crystallization at 80°C for 12 hours, cool to room temperature, filter, wash and dry, and finally obtain a zeolite 13X.

Embodiment 3

[0023] The acid leaching slag of laterite nickel ore, bauxite and sodium hydroxide were mixed according to the molar ratio of sodium to silicon n(Na 2 O) / n(SiO 2 ) is 2:1, the molar ratio of silicon to aluminum n(SiO 2 ) / n(Al 2 o 3 ) was 3.8:1 and mixed evenly, and reacted with alkali at 550°C for 2h, and then according to the water-sodium molar ratio n(H 2 O) / n(Na 2 O) add water in an amount of 50:1 to obtain a suspension; transfer the obtained suspension to a hydrothermal reaction kettle for crystallization at 90°C for 12 hours, cool to room temperature, filter, wash and dry, and finally obtain a zeolite 13X.

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Abstract

The invention provides a method for preparing zeolite 13X using acid leaching residue of laterite nickel ore and bauxite as raw materials, and relates to the fields of environment, chemical industry and material technology. The method includes the following steps: first, acid leaching residue of laterite nickel ore and bauxite are prepared. After grinding the ore and sodium hydroxide, they are mixed evenly according to a certain ratio, and the alkali fusion reaction is carried out for a period of time. The alkali fusion product undergoes steps such as water dissolution, hydrothermal reaction, filtration, washing, and drying to finally prepare zeolite 13X. The invention has low raw material price, simple technological process and high product added value, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical fields of environment, chemical industry and materials, and in particular relates to a method for preparing zeolite 13X by using laterite nickel ore acid leaching residue and bauxite as raw materials. Background technique [0002] Zeolite 13X type zeolite belongs to FAU type, cubic crystal system, space group is Fd3m. Zeolite 13X is widely used in the field of gas adsorption separation and catalysis because of its uniform channel and pore size, high specific surface area, excellent exchange performance, adsorption performance and catalytic performance. In terms of gas adsorption and separation, zeolite 13X is used for gas purification in air separation, removal of water and carbon dioxide, natural gas, liquefied petroleum gas, drying and desulfurization of liquid hydrocarbons, etc. In particular, the CO of zeolite 13X 2 / N 2 The selective performance of adsorption is very strong, and it is recognized as the pre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/22
CPCC01B39/22
Inventor 刘丽影杜涛车帅杨凡张胜东
Owner NORTHEASTERN UNIV LIAONING
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