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Cementing material prepared from oil-bearing sludge, preparation method and application of cementing material and cement prepared from cementing material

A technology of cementitious materials and sludge, which is applied in the field of cement, can solve the problems of soil, water and air pollution, products that cannot be directly used, and incomplete treatment, etc., and achieve the effects of short calcination cycle, low production cost and complete raw material treatment

Inactive Publication Date: 2017-04-26
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct discharge of oily sludge will not only occupy a large amount of arable land, but also cause serious pollution to the surrounding soil, water and air, which must be treated harmlessly or further resourced
[0003] In the prior art, methods such as thermochemical washing, coking treatment, microbial treatment, solidification treatment and incineration treatment are usually used for harmless treatment, but the above-mentioned harmless treatment methods have high energy consumption, incomplete treatment, and the products after treatment Can not directly use the disadvantages such as

Method used

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  • Cementing material prepared from oil-bearing sludge, preparation method and application of cementing material and cement prepared from cementing material

Examples

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preparation example Construction

[0021] The preparation method of the above-mentioned cementitious material includes: preparing the first raw material and the second raw material, adding water and stirring them into balls, calcining the balls at 1000-1100° C. for 0.5-1 hour, and pulverizing after cooling.

[0022] The preparation method of the gelling material provided by the invention only needs to dry the raw materials, pulverize them, mix them evenly and then calcinate them, and the process is simple and the energy consumption is low. The calcination time is only 0.5-1h, the production cycle is short and the efficiency is high. During the preparation process, no solid waste residue is discharged, and the treatment of oily sludge and steel slag is complete.

[0023] During the calcination process, the material balls fully undergo chemical reactions under high temperature conditions, causing corrosion to the sludge, destroying the original structure of harmful substances in the sludge, and killing pathogenic...

Embodiment 1

[0036] A method for preparing cement prepared from oily sludge, comprising:

[0037] Preparing the cementitious material: drying and pulverizing the oily sludge to a particle size of less than 80 μm to obtain the first raw material; drying and pulverizing the steel slag to a particle size of less than 80 μm to obtain the second raw material. Weigh 90 kg of the first raw material and 10 kg of the second raw material, add water, mix and stir to form pellets with a particle diameter of 8 mm. Dry the pellets at 100°C, then heat-preserve and calcinate at 1000°C for 0.5h, cool with blowing air, and crush until the particle size is less than 80μm.

[0038] 10kg of the above cementitious material, 5kg of dihydrate gypsum and 85kg of cement clinker were weighed and mixed to obtain cement prepared from oily sludge.

Embodiment 2

[0040] A method for preparing cement prepared from oily sludge, comprising:

[0041] Preparing the cementitious material: drying and pulverizing the oily sludge to a particle size of less than 80 μm to obtain the first raw material; drying and pulverizing the steel slag to a particle size of less than 80 μm to obtain the second raw material. Weigh 80kg of the first raw material and 20kg of the second raw material, add water, mix and stir to form pellets with a particle diameter of 10mm. Dry the pellets at 100°C, then heat-preserve and calcinate at 1000°C for 0.5h, cool with air, and crush until the particle size is less than 80μm.

[0042] Weighing 10kg of the above-mentioned cementitious material, 5kg of dihydrate gypsum and 85kg of cement clinker were mixed to obtain cement prepared from oily sludge.

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Abstract

The invention relates to a cementing material prepared from oil-bearing sludge, a preparation method and application of the cementing material and cement prepared from the cementing material, and belongs to the technical field of sludge treatment. The cementing material is obtained by mixing raw materials with water and then calcining the mixture, the raw materials comprise 60 wt%-90 wt% of a first raw material and 10 wt%-40 wt% of a second raw material, the first raw material is obtained by drying and smashing the oil-bearing sludge, the second raw material is obtained by drying and smashing steel slag, and the oil-bearing sludge is effectively treated and utilized through the industrial waste residues. The preparation method of the cementing material comprises the steps that the raw materials are prepared and taken to be stirred into material pellets by adding water, and the material pellets are calcined and then cooled. The preparation method is simple in process, low in energy consumption and complete in raw material treatment. The cement prepared from the oil-bearing sludge is prepared from 4 wt%-6 wt% of dehydrate gypsum, 65 wt%-90 wt% of cement clinker and 5 wt%-30 wt% of the cementing material and has the high compressive strength. By means of application of the cementing material in cement preparation, the potential value of the oil-bearing sludge can be fully utilized.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, and in particular to a cementitious material prepared from oily sludge, a preparation method and application thereof, and cement prepared therefrom. Background technique [0002] Oily sludge is usually produced in the collection, transportation, and refining of crude oil, such as oilfield drilling operations, pipeline perforation land crude oil sludge or oily sewage treatment facilities in refineries, light hydrocarbon processing plants and natural gas purification equipment. Sand or sludge etc. Due to the huge demand for oil, the volume of oily sludge produced every year is huge, and the oily sludge contains a large amount of heavy metals such as copper, zinc and mercury, and may also contain a large number of pathogenic bacteria and parasites (eggs). Direct discharge of oily sludge will not only occupy a large amount of arable land, but also cause serious pollution to the surrounding ...

Claims

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Application Information

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IPC IPC(8): C04B7/147C04B7/24C04B7/40
CPCC04B7/147C04B7/24C04B7/40Y02P40/10Y02P40/121
Inventor 张长森张建利高培养吴其胜诸华军韩朋德朱宝贵
Owner YANCHENG INST OF TECH
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