Method for extracting aluminum oxide and white carbon black from bituminous shale waste slag

A kind of oil mother shale, alumina technology, applied in alumina/hydroxide preparation, silicon oxide, silicon dioxide and other directions, can solve the problem of oil mother shale waste can not be fully utilized, waste and other problems, achieve low cost, improve utilization rate, increase economic effect

Active Publication Date: 2008-08-20
FUSHUN MINING IND GROUP
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This makes the kerogen shale residue unabl

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  • Method for extracting aluminum oxide and white carbon black from bituminous shale waste slag

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[0029] Example 1:

[0030] A. Extract alumina:

[0031] ① Take 100g of kerogen shale waste residue after grinding to below 100 mesh and roasting and activating at 550℃ for 2 hours;

[0032] ②Add 30% H in the waste residue according to the solid-liquid ratio of 1:3 2 SO 4 The solution is heated to 92-98°C to react for 5 hours, cooled, filtered with suction to obtain filtrate and filter residue, and the filter residue is to be extracted with white carbon black;

[0033] ⑨Add 20% NaOH solution to the filtrate until the pH of the filtrate is 13, so that the Fe(OH) produced by the reaction 3 , Mg(OH) 2 , Ca(OH) 2 Wait for the slag to settle and filter to obtain sodium aluminate NaAlO 2 filtrate;

[0034] ④From sodium aluminate NaAlO 2 CO is passed into the bottom of the filtrate 2 Gas to Al(OH) produced by reaction 3 All precipitation, suction filtration to obtain Al(OH) 3 precipitation;

[0035] ⑤The obtained Al(OH) 3 Al is obtained by precipitation drying and calcination 2 O 3 .

[0...

Example Embodiment

[0040] Example 2:

[0041] A. Extract alumina:

[0042] ① Take 300,000 g of kerogen shale residue after grinding to below 100 mesh and roasting and activating at 550°C for 2 hours;

[0043] ②Add 35% H in the waste residue according to the solid-liquid ratio of 1:4 2 SO 4 The solution is heated to 92-98°C to react for 5 hours, cooled, filtered with suction to obtain filtrate and filter residue, and the filter residue is to be extracted with white carbon black;

[0044]③Add 30% NaOH solution to the filtrate until the pH of the filtrate is 13, so that the Fe(OH) produced by the reaction 3 , Mg(OH) 2 , Ca(OH) 2 Wait for the slag to settle and filter to obtain sodium aluminate NaAlO 2 filtrate;

[0045] ④From sodium aluminate NaAlO 2 CO is passed into the bottom of the filtrate 2 Gas, to Al(OH) produced by the reaction 3 All precipitation, suction filtration to obtain Al(OH) 3 precipitation;

[0046] ⑤The obtained Al(OH) 3 Al is obtained by precipitation drying and calcination 2 O 3 . ...

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Abstract

The invention relates to a method for extracting alumina and white carbon black from waste residue of oil shale, which comprises the following steps: grinding, calcining and activating the waste residue of the oil shale; leaching aluminum with acid to form aluminum sulfate; leaching silicon using alkali to form sodium silicate, so as to extract the alumina and the white carbon black. Since two products of the alumina and the white carbon black can be synchronously extracted from the waste residue of the oil shale, the waste residue of the oil shale is fully utilized, the utilization ratio is improved, the economic benefit is increased, the waste is changed into valuables, the accumulation of large amount of residues are avoided, the land occupation is decreased and the environmental pollution is reduced. As a method of refinement and industrialization of comprehensive utilization, the method has the advantages of simple process, low investment and cost, good quality of the extracted alumina and white carbon black, high yield, and high product purity up to over 94%.

Description

1. Technical field [0001] The invention relates to a method for extracting alumina and white carbon black from oil shale waste residue. 2. Background technology [0002] my country is rich in kerogen shale resources, and the recoverable shale oil resources are 12 billion tons, mainly distributed in Huadian, Nong'an, Jilin Province, Maoming, Guangdong, and Fushun, Liaoning, ranking fourth in the world. The main utilization methods of kerogen shale resources are shale oil extraction and direct combustion for power generation. However, due to the high ash content of kerogen shale, a large amount of waste residue will be generated after utilization, and a large area of ​​land will be occupied for stockpiling, which will cause serious environmental pollution problems. Therefore, how to better comprehensively utilize kerogen shale residues and increase the added value of kerogen shale resources is an urgent technical problem to be solved. Kaolinite (Al 2 o 3 ·SiO2 2 2H 2 O), ...

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Application Information

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IPC IPC(8): C01F7/30C01B33/12
Inventor 韩放鲍明福高健鞠广生李理梁玉杰
Owner FUSHUN MINING IND GROUP
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