Method for producing cement by using drilling waste
A technology of drilling waste and cement, which is applied in the field of cement energy saving, can solve the problems of high cost and small processing capacity, and achieve the effect of large utilization, low processing cost and reduced energy consumption
Inactive Publication Date: 2019-09-10
四川久远环境技术有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to provide a method for producing cement by using drilling waste in view of the problems of high cost and small processing capacity in existing drilling waste treatment methods
At the same time, my country's annual cement production is as high as hundreds of millions of tons, which can effectively solve the problem of drilling waste disposal
Method used
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Embodiment 1
[0050] The oil-based mud in this example is taken from cuttings from a shale gas drilling well in Sichuan. Its method for producing cement by utilizing drilling waste (its technological process is as follows figure 1 shown), the steps are as follows:
[0051] (1) Sampling and analyzing the drilling waste, measuring the calorific value, pH value, moisture, elemental analysis and viscosity of the drilling waste sample; The waste gas generated in the storage warehouse is connected to the grate cooler through pipelines for incineration;
[0052] (2) Based on the calorific value, moisture, elemental analysis and viscosity of the drilling waste measured in step 1, determine the pretreatment conditions for the drilling waste, and dry, crush and grind the drilling waste in sequence until it meets the requirements of the cement kiln. After the index is met, it is fed into the rotary kiln through the compatibility of metering equipment and the feeding device to form raw meal; among th...
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The invention discloses a method for producing cement by using drilling waste. The invention aims to solve the problems that existing drilling waste treatment methods have high cost and a small treatment amount. The drilling waste is adopted as a raw material, and through control on the ratio of the added drilling waste, effective treatment of the drilling waste is realized on the premise of ensuring the quality of cement. Through the method, harmless, reduction and resource comprehensive utilization of the drilling waste can be achieved; and meanwhile, since existing cement kilns are adopted,effective treatment of the drilling waste can be realized in the cement production process, no other substances are required, and therefore the treatment cost can be reduced greatly. At the same time, the annual yield of produced cement in China reaches hundreds of millions of tons, and the problem of treatment of the drilling waste can be solved effectively; and furthermore, barium sulfate in the drilling waste can be used effectively, the prepared cement has an anti-radiation effect, and requirements for the corresponding cement strength grade can be met.
Description
technical field [0001] The invention relates to the field of cement energy saving, in particular to a method for producing cement by utilizing drilling waste. The application prepares cement with anti-radiation effect by adding a specific proportion of drilling waste in the cement production process, which can be used in ordinary construction fields to improve the anti-radiation performance of buildings, and has a good application prospect. Background technique [0002] The firing process of cement kiln clinker is as follows: After the raw meal enters the rotary kiln, drying, clay mineral dehydration and decomposition, carbonate decomposition, solid phase reaction, clinker sintering and cooling process occur in sequence, and finally the raw meal becomes clinker. According to the "China Cement Quality Analysis Report 2017" (China Cement, Issue 8, 2018, Cui Jian et al., pages 75-78), as of the end of June 2017, there were 3,465 cement production enterprises nationwide, includi...
Claims
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IPC IPC(8): C04B7/24C04B7/36
CPCC04B7/24C04B7/36Y02P40/10
Inventor 谌戡何小芬张良成何文浪李聪
Owner 四川久远环境技术有限公司