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Method for preparing high-strength oil fracturing proppant by high-iron bauxite

A technology for high iron bauxite and fracturing proppant, which is applied in earth-moving drilling, sustainable manufacturing/processing, and fluid exploitation, etc. performance, poor ability to solve backflow, and small equipment investment

Active Publication Date: 2014-02-12
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiency that high-iron bauxite with complex composition cannot be directly used as raw material to prepare oil fracturing proppant, the present invention provides a method for preparing high-strength oil fracturing proppant from high-iron bauxite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Crush the high-iron bauxite, mix 500g of 50-mesh bauxite with 30g of charcoal, and then carry out magnetization roasting in an atmosphere furnace at a roasting temperature of 550°C. After roasting, the material is subjected to magnetic separation to remove iron, and the magnetic separation parameters are: 11000~12000GS.

[0019] 2) The bauxite after magnetic separation and iron removal is mixed with various auxiliary materials in a certain proportion. The total weight percentage of various auxiliary materials is 10%, among which micro-silica powder in various auxiliary materials: 50%; manganese dioxide: 5% ; Titanium dioxide: 5%; Magnesium carbonate or magnesium oxide: 4.5%; Zirconia: 0.5%; Aluminum ash: 35%.

[0020] 3) After mixing, the mixed material enters the jet mill for crushing to a material particle size of 10-20 μm, and then enters the disc granulator for granulation to obtain a small pellet green body with a particle size of 0.2-1.0 mm.

[0021] 4) Put th...

Embodiment 2

[0024] 1) The high-iron bauxite is crushed, 500g of bauxite with a particle size of 50 mesh is mixed with 80g of coke, and then magnetized and roasted in an atmosphere furnace at a roasting temperature of 650°C. After roasting, the material is subjected to magnetic separation to remove iron, and the magnetic separation parameters are: 8000~10000GS.

[0025] 2) The bauxite after magnetic separation and iron removal is mixed with various auxiliary materials in a certain proportion. The total weight percentage of various auxiliary materials is 5%, among which micro-silica powder in various auxiliary materials: 45%; manganese dioxide: 5% ; Titanium dioxide: 5%; Magnesium carbonate or magnesium oxide: 4.5%; Zirconia: 0.5%; Aluminum ash: 40%.

[0026] 3) After mixing, the mixed material enters the jet mill for crushing to a material particle size of 10-20 μm, and then enters the disc granulator for granulation to obtain a small pellet green body with a particle size of 0.2-1.0 mm. ...

Embodiment 3

[0030] 1) Crush the high-iron bauxite, mix 500g of 50-mesh bauxite with 100g of petroleum coke, and then perform magnetization roasting in an atmosphere furnace at a roasting temperature of 450°C. After roasting, the material is subjected to magnetic separation to remove iron, and the magnetic separation parameters are: 13000~15000GS;

[0031] 2) The bauxite after magnetic separation and iron removal is mixed with various auxiliary materials in a certain proportion. The total weight percentage of various auxiliary materials is 5%, among which micro-silica powder in various auxiliary materials: 35%; manganese dioxide: 5% ; Titanium dioxide: 15%; Magnesium carbonate or magnesium oxide: 14.5%; Zirconia: 0.5%; Aluminum ash: 35%.

[0032] 3) The mixed mixed material enters the jet mill for crushing to a material particle size of 40-50 μm, and then enters the disc granulator for granulation to obtain a small pellet green body with a particle size of 0.2-1.0 mm.

[0033] 4) The smal...

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Abstract

The invention provides a method for preparing high-strength oil fracturing proppant by high-iron bauxite. The high-iron bauxite is used as a raw material; and the main chemical ingredients of the high-iron bauxite comprise the components by weight: 30-60% of Al2O3, 10-30% of Fe, 1-5% of TiO2 and 1-5% of SiO2. The production method of the proppant comprises the following steps of: crushing the high-iron bauxite, adding a reducing agent according to a certain ratio, and putting the reducing agent into an atmosphere furnace to bake and magnetically separate; and putting the magnetically separated bauxite and various auxiliary materials into an airstream crusher according to the certain ratio, fully mixing and crushing, then carrying out granulation process through a disc pelletizer, obtaining green pellet-shaped ware bodies with proper grain size, and sintering the green pellet-shaped ware bodies by a rotary kiln to obtain the high-strength oil fracturing proppant product. The method is simple in process; the prices of the used raw materials are low; the sources are wide; the production cost is low; the magnetization roasting temperature is lower than that of a traditional process; the energy is saved; and the method is environment-friendly.

Description

technical field [0001] The invention relates to a method for preparing a high-strength petroleum fracturing proppant from high-iron bauxite, which belongs to the technical field of new materials. Background technique [0002] Petroleum fracturing proppant is a propping material that keeps deep rocks in a cracked state, and is mainly used in the exploitation of oil and natural gas deep wells. When oil and gas are mined in deep wells, high closure pressure and low permeability deposits are treated by fracturing to crack the oil-bearing rock formations, and oil and gas gather from the fractures. Using support material and high-pressure solution to enter the formation and fill in the rock formation fractures can prevent the support fractures from closing due to stress release, thereby maintaining high conductivity, allowing oil and gas to flow freely, and increasing production. [0003] Currently commonly used petroleum fracturing proppants include quartz sand, ceramsite, and v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/80
CPCY02P20/10
Inventor 谢刚于站良张汉平陈家辉许娜谢天鉴张笑盈
Owner KUNMING METALLURGY INST
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