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Preparation method and application of low-density ceramsite proppant added with pretreated electrolytic manganese residues

A technology of electrolytic manganese slag and pretreatment, which is applied in the fields of application, ceramic products, chemical instruments and methods, etc., to achieve the effects of lowering sintering temperature, less crystal phase impurity content, and reducing sintering cost

Active Publication Date: 2021-06-08
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the team has developed a preparation method of adding electrolytic manganese slag ceramsite proppant, which has applied for a patent, application number 202110006694.X, but after follow-up research, this technical solution can still be further improved and optimized

Method used

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  • Preparation method and application of low-density ceramsite proppant added with pretreated electrolytic manganese residues
  • Preparation method and application of low-density ceramsite proppant added with pretreated electrolytic manganese residues

Examples

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Effect test

Embodiment 1

[0038] Example 1. A low-density ceramsite proppant added with pretreated electrolytic manganese slag, the ceramsite proppant is made of the following raw materials: 15 kg of pretreated electrolytic manganese slag and 85 kg of bauxite; the electrolytic manganese slag is industrial waste The residue after the wet extraction of manganese is pretreated by calcination.

[0039] A preparation method and application of a low-density ceramsite proppant added with pretreated electrolytic manganese slag, comprising the following steps:

[0040] (1) Drying and crushing the pretreated electrolytic manganese slag and bauxite, grinding and 300-mesh sieving of the pretreated electrolytic manganese slag and bauxite respectively, the powder particle size is all small 0.048mm, and set aside; In the step (1), the pretreated electrolytic manganese slag contains silicon oxide with a mass fraction of 25-35%, calcium oxide with a mass fraction of 10-25%, and alumina with a mass fraction of 10-15%; ...

Embodiment 2

[0043] Example 2. A low-density ceramsite proppant added with pretreated electrolytic manganese slag, the raw materials are: 20kg of pretreated electrolytic manganese slag and 80kg of bauxite.

[0044] The pretreated electrolytic manganese slag is obtained by calcination at 700°C for 2.5 hours after the wet electrolytic extraction of metal manganese. The pretreated electrolytic manganese slag contains silicon oxide with a mass fraction of 25-35%, calcium oxide with a mass fraction of 10-25%, and aluminum oxide with a mass fraction of 10-15%.

[0045] The preparation steps of the product are:

[0046] (1) drying and crushing the pretreated electrolytic manganese slag and bauxite, and grinding the pretreated electrolytic manganese slag and bauxite respectively, and passing through a 300 mesh sieve to obtain pretreated electrolytic manganese slag powder and bauxite soil powder;

[0047] (2) Mix the pretreated electrolytic manganese slag powder and bauxite powder, add water, st...

Embodiment 3

[0049] Example 3. A low-density ceramsite proppant added with pretreated electrolytic manganese slag, the raw materials are: 18kg of pretreated electrolytic manganese slag and 82kg of bauxite.

[0050] The pretreated electrolytic manganese slag is obtained by calcination at 750°C for 3 hours after the wet electrolytic extraction of metal manganese. The pretreated electrolytic manganese slag contains silicon oxide with a mass fraction of 25-35%, calcium oxide with a mass fraction of 10-25%, and aluminum oxide with a mass fraction of 10-15%.

[0051] The preparation steps of the product are:

[0052] (1) drying and crushing the pretreated electrolytic manganese slag and bauxite, and grinding the pretreated electrolytic manganese slag and bauxite respectively, and passing through a 300 mesh sieve to obtain pretreated electrolytic manganese slag powder and bauxite soil powder;

[0053] (2) Mix the pretreated electrolytic manganese slag powder and the bauxite powder, add the aqu...

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Abstract

The invention discloses a preparation method and application of a low-density ceramsite proppant added with pretreated electrolytic manganese residues. The low-density ceramsite proppant is mainly prepared from the following raw materials: pretreated electrolytic manganese residues and bauxite, wherein the mass fraction of the pretreated electrolytic manganese residues is 15-20%; the pretreated electrolytic manganese residues are obtained by calcining waste residues obtained after a process of extracting manganese metal through wet electrolysis for 2-3 hours at the temperature of 650-750 DEG C. The performance of the prepared low-density ceramsite proppant meets the SY / T5108-2014 industrial standard, the low-density ceramsite proppant can be used for replacing natural quartz sand to be used for fracturing operation under the closing pressure of 52 MPa, and the low-density ceramsite proppant is particularly used for hydraulic fracturing exploitation of shallow petroleum and natural gas. According to the prepared low-density ceramsite proppant, the pretreated electrolytic manganese residues can be added in a large proportion, and the adding proportion can reach 15-20%. In the preparation method, the sintering temperature is further reduced after the ball blank is obtained through treatment, and only the temperature of 1150-1250 DEG C is needed.

Description

technical field [0001] The invention relates to the technical field of ceramsite proppant, in particular to a preparation method and application of a low-density ceramsite proppant added with pretreated electrolytic manganese slag. Background technique [0002] Electrolytic manganese slag (EMR) is the waste residue after wet electrolytic extraction of manganese metal. Low-grade manganese ore and backward production technology lead to further increase in the amount of slag in electrolytic manganese slag, which will become a problem that plagues electrolytic manganese enterprises and society. Therefore, in the case of lack of existing resources, the development of comprehensive utilization of electrolytic manganese slag has important practical significance for economic and environmental protection. [0003] Fracturing proppant is a solid particle with a certain strength that plays a role in supporting rock fractures in the process of oil and natural gas fracturing. The main r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622C04B38/00C09K8/80
CPCC04B35/10C04B35/62204C09K8/80C04B38/009C04B2235/3208C04B2235/3418C04B2235/6567C04B2235/77C04B2235/96C04B38/0067Y02P40/60
Inventor 张煜段江飞陈前林张鹏冯圣霞
Owner GUIZHOU UNIV
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