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Stabilizing material, and preparation method and application thereof

A technology for stabilizing materials and uses, applied in the field of stabilizing materials and their preparation, can solve problems such as soil, surface and groundwater pollution, plant and human health hazards, and small processing capacity, and achieve convenient use, controllable curing time and strength, The effect of avoiding pollution

Active Publication Date: 2011-06-15
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these pollutants are not treated effectively, it will lead to pollution of soil, surface and groundwater, cause serious impact and damage to the environment, and directly or indirectly cause harm to animals, plants and human health.
[0003] Since the 1970s, some research departments in the United States, the former Soviet Union, Canada and China have carried out a lot of research work on how to deal with drilling waste, and have found some methods to deal with drilling waste, such as solid-liquid separation method, environmental protection, etc. Empty or ground injection method, land scattered tillage method, dry incineration method, chemical solidification method, biodegradation method, conversion to other uses, etc., but these methods have the disadvantages of high cost, poor applicability and small processing capacity

Method used

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  • Stabilizing material, and preparation method and application thereof
  • Stabilizing material, and preparation method and application thereof
  • Stabilizing material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, 2 kg of calcined phosphogypsum powder and 3 kg of fly ash are mixed to form the core material. Then 70 kilograms of sulphoaluminate cement and 15 kilograms of ordinary Portland cement are mixed uniformly, and then added into a ball mill together with 10 kilograms of quicklime and the above-mentioned 5 kilograms of core material and mixed to obtain a stable material.

[0028] Performance evaluation: After adding 8wt% of the above-mentioned stabilizing materials to the drilling waste to be solidified and fully mixed, the mixed waste loses fluidity, placed and cured for 7 days, and its cementation strength is 0.8Mpa.

Embodiment 2

[0030] First mix 5 kg of calcined phosphogypsum powder, 1 kg of naphthalene-based water reducer and 4 kg of fly ash to make the core material. Then 70 kilograms of sulphoaluminate cement and 10 kilograms of ordinary portland cement are mixed evenly, and then together with 5 kilograms of quicklime and the above-mentioned 10 kilograms of core material, they are added into a ball mill and mixed to obtain a stable material.

[0031] Performance evaluation: After adding 15wt% of the stabilizing material to the drilling waste to be solidified and fully mixed, after the mixed waste loses fluidity, it is placed and cured for 7 days, and its cementation strength is 1.5Mpa.

Embodiment 3

[0033] First mix 5 kg of calcined phosphogypsum powder, 1 kg of naphthalene-based water reducer and 4 kg of fly ash to make the core material. Then 75 kilograms of sulphoaluminate cement and 5 kilograms of ordinary Portland cement are mixed uniformly, and then added into a ball mill together with 10 kilograms of quicklime and the above-mentioned 10 kilograms of core material and mixed to obtain a stable material.

[0034] Performance evaluation: After adding 20wt% of the stabilizing material to the drilling waste to be solidified and fully mixed, after the mixed waste loses fluidity, it is placed and cured for 7 days, and its bonding strength is 2.1Mpa.

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Abstract

The invention relates to a stabilizing material which is prepared from the following raw materials in parts by weight: 70-85 parts of sulfoaluminate cement, 5-15 parts of ordinary Portland cement, 5-10 parts of quicklime and 5-10 parts of core material. The core material is formed by mixing the following components in parts by weight: 2-5 parts of calcined ardealite powder, 0-2 parts of water-reducing agent and 2-8 parts of porous carrier. The invention also relates to a preparation method of the stabilizing material and application of the stabilizing material in treating well-drilling waste, making roadbed materials and making concrete pavement bricks.

Description

technical field [0001] The invention relates to a stable material and its preparation method and use. Background technique [0002] Drilling waste is the largest amount of waste pollutants left over from the drilling process of petroleum exploration and development. It is mainly a multiphase stable colloidal suspension composed of clay, weighted materials, various chemical treatment agents, sewage, dirty oil and drilling cuttings. system, the main components that are harmful to the environment are hydrocarbons, salts, various polymers, sulfonates, certain metal ions (mercury, copper, arsenic, chromium, zinc and lead) and impurities in barite, these factors The composition of drilling waste is complicated, and various pollution indicators seriously exceed the standard. If these pollutants are not treated effectively, it will lead to pollution of soil, surface and groundwater, cause serious impact and damage to the environment, and directly or indirectly cause harm to animals...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/36
CPCC04B28/065Y02W30/91C04B7/02C04B14/365C04B20/002C04B22/064C04B40/0028C04B2103/302C04B18/08C04B24/226C04B14/047C04B24/2641
Inventor 刘罡朱战兵项先忠莫成孝刘志东李相国刘兵
Owner CHINA NAT OFFSHORE OIL CORP
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