Method for preparing fracturing propping agent by utilizing waste residues generated by laterite-nickel ore smelting

A fracturing proppant, laterite nickel ore technology, applied in earthwork drilling, chemical instruments and methods, drilling composition, etc. Sexual development, easy availability of resources, and cost reduction

Pending Publication Date: 2021-12-07
BEIJING JIAHE HUITUO PETROLEUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that waste slag produced by laterite nickel ore smelting cannot be rationally used to make fracturing proppant, the present invention provides a method for preparing fracturing proppant by utilizing waste slag produced by laterite nickel ore smelting

Method used

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  • Method for preparing fracturing propping agent by utilizing waste residues generated by laterite-nickel ore smelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Ferronickel block slag is broken into ferronickel slag powder with particle size less than 325 mesh;

[0065] (2) In parts by weight, take 6 parts of ferronickel slag powder, add 1 part of low-grade bauxite, 1 part of aluminum dihydrogen phosphate, 1 part of enstatite and 1 part of hydroxymethyl cellulose to form a mixed pink. Then, use the mixed powder to granulate through a pan granulator or a round pan granulator, and screen out particles with a particle size of 20-40 mesh;

[0066] (3) The sieved particles were sintered at 1100° C., and the holding time was 60 minutes to obtain ceramsite aggregate;

[0067] (4) Weigh 1000g of ceramsite aggregate and heat it to 250°C, keep it for 2min, then lower the temperature to 190°C, stir rapidly, add 20g of epoxy resin, 0.02g of coupling agent, and 0.2g of plasticizer in turn while stirring After 5 minutes of stirring evenly, add 0.2g of curing agent to solidify the epoxy resin, add 0.2g of lubricant before the particles ...

Embodiment 2

[0069] (1) Ferronickel block slag is broken into ferronickel slag powder with particle size less than 325 mesh;

[0070] (2) In parts by weight, take 8 parts of ferronickel slag powder, add 2 parts of low-grade bauxite, 0.5 part of aluminum dihydrogen phosphate, 0.5 part of enstatite and 0.5 part of hydroxymethyl cellulose to form a mixed pink. Then, use the mixed powder to granulate through a pan granulator or a round pan granulator, and screen out particles with a particle size of 50-70 mesh;

[0071] (3) The sieved particles were sintered at 1300°C, and the holding time was 120min to obtain ceramsite aggregate;

[0072] (4) Weigh 1000g of ceramsite aggregate and heat it to 260°C, keep it for 3 minutes, then lower the temperature to 210°C, stir rapidly, add 100g of epoxy resin, 1.2g of coupling agent, and 10g of plasticizer in turn while stirring, After 10 minutes of stirring evenly, add 8g of curing agent to solidify the epoxy resin, add 6g of lubricant before the particl...

Embodiment 3

[0074] (1) Ferronickel block slag is broken into ferronickel slag powder with particle size less than 325 mesh;

[0075] (2) In parts by weight, take 7 parts of ferronickel slag powder, add 1.5 parts of low-grade bauxite, 0.75 parts of aluminum dihydrogen phosphate, 0.75 parts of enstatite and 0.75 parts of hydroxymethyl cellulose to form a mixed pink. Then, use the mixed powder to granulate through a pan granulator or a round pan granulator, and screen out particles with a particle size of 20-40 mesh;

[0076] (3) The sieved particles were sintered at 1200° C., and the holding time was 90 minutes to obtain ceramsite aggregate;

[0077] (4) Weigh 1000g of ceramsite aggregate and heat it to 255°C, keep it for 2.5min, then lower the temperature to 200°C, stir quickly, add 50g of epoxy resin, 1.2g of coupling agent, and 10g of plasticizer in turn while stirring After 8 minutes of stirring evenly, add 8g of curing agent to solidify the epoxy resin, add 6g of lubricant before the...

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Abstract

The invention relates to a method for preparing a fracturing propping agent by utilizing waste residues generated by laterite-nickel ore smelting. The method comprises the following steps: crushing ferronickel block residues into ferronickel residue powder with a first preset granularity; taking 6-8 parts by weight of ferronickel slag powder, and adding 1-2 parts by weight of an aluminum-containing mixture, 0.5-1 part by weight of aluminum dihydrogen phosphate, 0.5-1 part by weight of enstatite and 0.5-1 part by weight of hydroxymethyl cellulose to form a mixed powder; performing granulating by using the mixed powder, and screening out particles with a second preset particle size; and sintering the particles into ceramsite aggregate. The ceramsite aggregate can be directly used as a fracturing propping agent, compared with a traditional quartz sand propping agent, the main raw material is the ferronickel slag, the ferronickel slag is wide in source, rich in resource and easy to obtain, and the formed fracturing propping agent is high in strength and not prone to being broken. Compared with a traditional ceramsite proppant, the ceramsite proppant has the advantages that: the preparation process is simplified, the energy consumption is lower, the raw material cost is lower, the manufacturing cost is greatly reduced, and the hydraulic fracturing cost of oil and gas wells is further reduced.

Description

technical field [0001] The invention relates to the technical field of reusing waste slag produced in the smelting of laterite nickel ore, in particular to a method for preparing a fracturing proppant from the waste slag produced in the smelting of laterite nickel ore. Background technique [0002] After smelting ferronickel from laterite nickel ore, waste slag is produced. The main components of waste slag include forsterite, silica, magnesia and aluminum oxide. Due to the high content of magnesium oxide in the waste residue, it is not suitable as an additive for building materials, so there is no large-scale consumption method, resulting in a large amount of waste residue, which not only occupies a large amount of land resources, but also has a certain risk of environmental pollution. [0003] There are two main types of domestic mainstream fracturing proppant, namely quartz sand proppant and ceramsite proppant. Among them, the strength of the quartz sand proppant is low,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/80
CPCC09K8/80
Inventor 孙东奎
Owner BEIJING JIAHE HUITUO PETROLEUM TECH
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