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Determination method of limestone mud content

A detection method and limestone technology, which are applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve the problem of long inspection time, quality production is not guaranteed, and timely response is not possible. Production quality and other issues, to achieve the effect of short testing time and accurate test results

Active Publication Date: 2014-10-08
SICHUAN ESHENG CEMENT GROUP
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the amount of limestone continues to increase, the production and quality of limestone cannot be guaranteed. The control method adopted is controversial. The main reason is that limestone crushing will produce stone powder, which leads to the use of existing limestone mud. The results obtained by the detection method include both the mud content and the stone powder content, that is, the test results are inaccurate; and the inspection takes a long time, which cannot reflect the production quality in time, which brings difficulties to production and quality control. For example, once the mud content exceeds the standard , will directly affect the quality of cement products, so it is necessary to strengthen its quality control

Method used

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  • Determination method of limestone mud content
  • Determination method of limestone mud content
  • Determination method of limestone mud content

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preparation example Construction

[0029] Preparation of A standard sample:

[0030] Clay powder: take a sample of mine soil, soak in water to separate the mud and limestone to make a fine powder with a particle size of less than 0.08mm; the soil here is preferably the original mud;

[0031] Limestone and limestone powder: take mine limestone, wash it with water, dry and crush, select the limestone sample with a particle size greater than 0.08mm, and the limestone powder sample with a particle size less than 0.08mm; here, mine limestone is best blasted Limestone block, not contaminated by mud;

[0032] The obtained mud powder, limestone powder and limestone are prepared as standard samples for the methylene blue test. The configuration of the standard samples is in accordance with the following principles:

[0033] Among them, P is the percentage of the mass of mud powder and limestone powder to the total mass of the standard sample, and W is the mass ratio of mud powder in the mixture of mud powder and limestone pow...

Embodiment

[0059] The method of the present invention is used to detect the mud content in the limestone mined in Xingyang Village, Jiuli Town, Emeishan, Sichuan, and the specific operations are as follows:

[0060] 1 Preparation of standard samples:

[0061] Mud powder: choose 10kg of mud from the mine cover, after soaking with water, pass through a 0.08mm square-hole sieve to remove the remaining sieving, and then leave the remaining mud to stand still to extract the surface water, and then dry it in an oven at 105°C, and use manual methods The fine powder passes through a 0.08mm square-hole sieve, about 4kg for use;

[0062] Limestone and limestone powder: choose clean Esheng mine limestone, wash the surface with water, dry it, mechanically crush it, screen 40kg of limestone samples with a particle size of 2.36mm~0.08mm, and screen 4kg of limestone powder samples below 0.08mm;

[0063] Prepare standard samples (each standard sample is 200g):

[0064] The amount of mud powder, limestone powder ...

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Abstract

The invention relates to the technical field of detection of mixing materials, in particular to a method for detecting content of mud in limestone. The detection method particularly comprises the steps as follows: A, preparing a standard sample, that is, obtaining mine soil samples to prepare mud powder with a grain size smaller than 0.08mm, obtaining mine limestone, screening limestone samples with a grain size larger than 0.08mm and limestone powder with a grain size smaller than 0.08mm, and preparing a methylene blue testing sample by using the mud powder, the limestone powder and the limestone according to the following principles; B, detecting consumption V of methylene blue solution of the standard sample obtained in the step A by using a methylene blue testing method and building a corresponding relationship among V, P and W; and C, obtaining W1 of the to-be-detected sample obtained through a passing rate P1 of the to-be-detected sample with a grain size smaller than 0.08mm, the consumption V1of a methylene blue solution and the relationship among the V, the P and the W in the contrast step B, so as to obtain the content of mud in the sample to be detected. The detection method is accurate in test result and short in time for detection.

Description

Technical field [0001] The invention relates to the technical field of detection of mixed materials for cement, in particular to a method for detecting mud content in limestone for cement. Background technique [0002] Due to the increasing scarcity of traditional cement admixture resources, companies now use limestone to replace admixture raw materials, which has brought good economic benefits. However, as the amount of limestone continues to increase, it is difficult to ensure the production and quality of limestone. The control method adopted is controversial. The main reason is that the crushing of limestone will produce stone powder, which leads to the use of existing limestone mud content. The result obtained by the detection method includes both the mud content and the stone powder content, that is, the test result is inaccurate; and the inspection takes a long time and cannot reflect the production quality in time, which brings difficulties to production and quality contr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 胡朝春谭承林齐涛军
Owner SICHUAN ESHENG CEMENT GROUP