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Portable ceramsites and preparation method thereof

A production method and ceramsite technology, applied in the field of materials, can solve the problems of impossibility of carrying petroleum additives, inability to fully exert the efficacy of petroleum proppant, slow release, etc., and achieve the effect of prolonging the effect of proppant

Inactive Publication Date: 2016-02-10
XINMI WANLI IND DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the ceramsite sand commonly used in the market mostly uses bauxite as the main material, supplemented by M n o 2 Flux, fired at 1300°C-1370°C, the formed sand grains are dense in texture, glassy on the surface, and basically belong to ceramic crystal phase. Fracturing on oil fields; but its disadvantage is: it is impossible to carry more petroleum additives, and then release slowly underground, and the effect of petroleum proppants cannot be fully exerted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method for making portable ceramsite, comprising the following steps: (1) Powder making: process 45% aluminum ore, 45% smelted aluminum ore, 5% manganese ore, and 5% wood fiber in a powder mill to make fine powder (2) Granulation: put the composite powder in the granulator, spray water, and rotate for 90 minutes to make raw granules with a moisture content of 8%, and then send them into the The screening system screens out semi-finished raw granules of different specifications according to different requirements; (3) Drying: transport the semi-finished raw granules with qualified particle size to the drying system, and use the waste heat of the rotary kiln to dry the semi-finished raw granules. The drying temperature is 60°C until the moisture is 4%, and then sieved again to remove the dust carried; (4) firing: the dried raw particles are sent to the rotary kiln through the conveyor belt, and the kiln tail temperature The temperature is 450°C, the firing temperature i...

Embodiment 2

[0011] A preparation method of portable ceramsite, comprising the following steps: (1) powder making: 48% aluminum ore, 40% smelted aluminum ore, 5.5% manganese ore, and 6.5% wood fiber are processed in a powder mill to make fineness Reach 400 meshes to obtain composite powder; (2) Granulation: Put the composite powder in the granulator, spray water, and rotate for 95 minutes to make raw granules with a water content of 9%, and then send them to the sieve through the conveyor belt According to different requirements, the sub-system screens out raw granulated semi-finished products of different specifications; (3) drying: transport the raw granulated semi-finished products with qualified particle size to the drying system, and use the waste heat of the rotary kiln to dry the raw granulated semi-finished products. The drying temperature is 80°C until the moisture is 3.5%, and then sieved again to remove the dust carried; (4) firing: the dried raw particles are sent to the rotary ...

Embodiment 3

[0013] A preparation method of portable ceramsite, comprising the following steps: (1) powder making: 50% aluminum ore, 37% smelted aluminum ore, 6% manganese ore, and 7% wood fiber are processed in a powder mill to make fineness Reach 400 meshes to obtain composite powder; (2) Granulation: Put the composite powder in the granulator, spray water, and rotate for 100 minutes to make raw granules with a moisture content of 9.5%, and then send them to the sieve through the conveyor belt According to different requirements, the sub-system screens out raw granulated semi-finished products of different specifications; (3) drying: transport the raw granulated semi-finished products with qualified particle size to the drying system, and use the waste heat of the rotary kiln to dry the raw granulated semi-finished products. The drying temperature is 100°C until the moisture is 3%, and then sieved again to remove the carried dust; (4) firing: the dried raw particles are sent to the rotary...

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PUM

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Abstract

The invention relates to the field of materials and particularly relates to portable ceramsites and a preparation method thereof. The portable ceramsites can adsorb chemical agents and are a novel oilfield fracturing ceramsite proppant which is non-closed and porous and has very high pressure resistance; and the portable ceramsites are prepared from the raw materials in percentage by weight: 45-55% of bauxite, 35-45% of crushed bauxite, 5-6% of manganese ore and 5-7% of wood fibers. The preparation method sequentially comprises the steps of carrying out milling, carrying out granulating, carrying out baking, carrying out firing and carrying out finished product screening. According to the preparation method, through introducing the low-melting-point high-volatilization wood fiber additive, a closed glass phase is not formed on the surface of each ceramsite any more during firing, and a non-closed space with the total volume of 15-25% is formed inside each ceramsite, namely, produced ceramic granules are not high-dense solid matters, but high-strength low-volume-density solid matters. The portable ceramsites have extremely high adsorbability, can carry about 15% of petroleum adjuvants, are fractured into a deep stratum along with the adjuvants and are slowly released, so as to prolong a proppant effect; and the portable ceramsites have a protection effect on oil wells.

Description

technical field [0001] The present invention relates to the field of materials, in particular to a portable ceramsite and a manufacturing method thereof. The portable ceramsite can absorb chemical agents, and is a new type of oilfield pressure-resisting material with non-closed pores and strong compression resistance. Cracked ceramsite proppant. Background technique [0002] At present, the ceramsite sand commonly used in the market mostly uses bauxite as the main material, supplemented by M n o 2 Flux, fired at 1300°C-1370°C, the formed sand grains are dense in texture, glassy on the surface, and basically belong to ceramic crystal phase. Fracturing on oil fields; but its disadvantage is that it is impossible to carry more petroleum additives, and then release them slowly underground, and the effect of petroleum proppants cannot be fully exerted. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned disadvantages, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/10C04B35/622
Inventor 王长太
Owner XINMI WANLI IND DEV