CN111721893A - Method for determining clay mineral composition and content of each component in mud powder in sand - Google Patents

Method for determining clay mineral composition and content of each component in mud powder in sand Download PDF

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CN111721893A
CN111721893A CN202010608974.3A CN202010608974A CN111721893A CN 111721893 A CN111721893 A CN 111721893A CN 202010608974 A CN202010608974 A CN 202010608974A CN 111721893 A CN111721893 A CN 111721893A
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秦丹
吴建华
孟祥杰
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Chongqing University
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Abstract

The invention relates to a method for determining clay mineral composition components and content of each component contained in mud powder in sand, and belongs to the field of buildings. According to the method, the MB value of the test sand containing different amounts of stone powder and mud powder is determined, so that the dynamic influence relationship among the stone powder, the mud powder and the MB value is established by the same linear regression equation, the composition of the clay mineral contained in the mud powder in the sand sample to be tested can be qualitatively determined by drawing a linear regression curve and combining a chemical analysis testing technology, and quantitative calculation is performed by combining the regression equation on the basis.

Description

Method for determining clay mineral composition and content of each component in mud powder in sand
Technical Field
The invention belongs to the field of buildings, and particularly relates to a method for measuring clay mineral composition and content of each component in mud powder in sand.
Background
The fine aggregate (natural sand, machine-made sand and the like) is used as an important component of the concrete and accounts for about 30 percent of the total volume of the concrete, and the quality of the quality and various performances of the fine aggregate directly influences the early working performance, the later mechanical performance and the durability of the concrete. Under the large background of continuous economic development, limited natural resources and ecological environment requirements, the proportion of natural sand for concrete is gradually decreased year by year, and under the background, machine-made sand is produced. An important technical index for measuring the quality of the machine-made sand is the content of the mud, and according to the characteristics of material sources and production conditions, the machine-made sand which is put into production and use at present inevitably contains the mud.
The building sand stipulates that the content of particles with the particle size of less than 75 microns in the machine-made sand is the content of stone powder, but mud is easily mixed in the process of mining and processing the machine-made sand, so that the particles not only contain the stone powder, but also contain mud powder. The properties and the effects of the stone powder and the mud powder are greatly different, and on one hand, the stone powder and the mud powder with smaller particle size can play a filling role in concrete; on the other hand, the stone powder has a compact structure, only has surface physical adsorption effect on water, and the mud powder has a loose structure, so that the strength and durability of the concrete can be influenced after water absorption and expansion. Under the influence of the prohibition of production of river sand and the sudden rise of sand price, the demand of machine-made sand rises sharply, the amount of mud contained in the machine-made sand is not easy to control any more, and the performances of the concrete in all aspects are seriously influenced.
Mud, which is widely present in nature, is a substance with a complex structure, and the performance of concrete is related not only to the amount and particle size of mud, but also to the physical properties, mineral types and composition of mud. It is therefore not strictly necessary to control the content of mud in the manufactured sand solely from the definition and the definition of the mud size. And the method for measuring the content of the stone powder and mud by adopting a methylene blue dip-dyeing test in the standard GB/T14684-2011 still has two problems: firstly, the method can only simply and qualitatively judge whether the machine-made sand is mainly stone powder or mud, but cannot quantitatively determine and calculate the contents of the stone powder and the mud; secondly, the composition and structure of the mud are complex, the influence difference of different types of clay minerals on the concrete is large, the method cannot measure the clay mineral components contained in the mud, and further cannot provide favorable guidance for actual production. At present, the research on the determination method of the components and the content of clay minerals contained in the sand powder is less, so that the determination and the control of the content of the clay in the sand are difficult to accurately control in the prior art, and the reduction of the content of stone powder beneficial to the performance of concrete is easily caused while the content of the clay is strictly limited, thereby limiting the application range of the sand and increasing unnecessary cost.
Disclosure of Invention
In view of the above, the present invention aims to provide a method for determining clay mineral composition and content of each component contained in sand.
In order to achieve the purpose, the invention provides the following technical scheme:
1. a method for measuring the components and the contents of all the components of clay minerals contained in mud powder in sand comprises the following steps:
(1) three main single-component clay minerals in the mud: montmorillonite, kaolin and illite according to the mass ratio a1:b1:c1、a2:b2:c2、a3:b3:c3……am:bm:cm……an:bn:cnMixing to obtain n kinds of mud powder, sequentially marked as mud powder 1, mud powder 2, mud powder 3 … … mud powder m … … mud powder n, wherein a is1、a2、a3……am……an、b1、b2、b3……bm……bn、c1、c2、c3……cm……cnBoth are greater than zero, m and n are positive integers greater than 0;
(2) respectively taking i parts of the mud powder 1 prepared in the step (1), wherein the mass of each part of the mud powder 1 is 0g, t g, 2t g, 3tg and 4t g … … jt g … … 50g in sequence, adding stone powder into each part of the mud powder 1, and adding 50g, 50-tg, 50-2t g, 50-3t g and 50-4t g … … 50-jt g … … 0g in sequence of the stone powder to obtain i parts of mixed powder with the mass of 50 g; taking i parts of 150g of standard sand, sequentially adding the obtained mixed powder to obtain i parts of test sand with the mass of 200g, respectively measuring methylene blue MB values of the test sand, and sequentially recording test results as MB11、MB12、……、MB1iAnd the mud powder accounts for the mass percent X of the mixed powder1iOn the abscissa, methylene blue MB value Y1iDrawing a linear regression curve for the ordinate to obtain a linear regression equation Y1i＝h1X1i+k1T is greater than zero, i and j are positive integers greater than 0, and jt is less than 50; mud powder 2, mud powder 3 … … mud powder m … … mud powder n are carried out according to the mode of processing mud powder 1, and methylene blue MB value is respectively measured to be MB21、MB22、……、MB2i，MB31、MB32、……、MB3i，……，MBm1、MBm2、……、MBmi，……，MBn1、MBn2、……、MBniThe corresponding linear regression equation is: y is2i＝h2X2i+k2，Y3i＝h3X3i+k3，……，Ymi＝hmXmi+km，……，Yni＝hnXni+kn；
(3) Respectively carrying out chemical analysis tests on the n kinds of mud powder obtained in the step (1) to obtain a main oxide content E of the n kinds of mud powder1Then washing out the powder containing stone powder and mud powder of the sand sample to be tested, and carrying out chemical analysis test to obtain the main oxide content E of the powder2Will show table E2And table E1The contents of main oxides of the n kinds of mud powder are contrastively analyzed, the mud powder m with the characteristics similar to the main oxide content of the powder is found from the n kinds of mud powder, then the methylene blue MB value Z of the powder is measured, and the Z is introduced into the linear regression equation Y of the mud powder mmi＝hmXmi+kmObtaining the mass percentage X of the mud powder in the powdermi＝(Z-km)/hmFurther calculating the mass of the mud powder in the powder to be MMud＝50·Xmi＝50·(Z-km)/hmStone powder content MStone (stone)＝50·(1-Xmi)＝50·(hm-Z+km)/hmFinally, sequentially calculating the mass of the montmorillonite, the kaolin and the illite in the mud powder according to the mass ratio of the montmorillonite, the kaolin and the illite in the mud powder m;
TABLE E1
Figure BDA0002560199720000031
TABLE E2
Figure BDA0002560199720000032
α in tables 1 and 21+β1+γ1+1+1+ζ1+ν1＜100；α2+β2+γ2+2+2+ζ2+ν2＜100；
α3+β3+γ3+3+3+ζ3+ν3＜100；αm+βm+γm+m+m+ζm+νm＜100；
αn+βn+γn+n+n+ζn+νn＜100；αSample (A)+βSample (A)+γSample (A)+Sample (A)+Sample (A)+ζSample (A)+νSample (A)＜100。
Preferably, the method for measuring the methylene blue MB value of each test sand in the step (2) and the method for measuring the methylene blue MB value Z of the powder in the step (3) are both as follows: a method for testing the methylene blue value of limestone powder in JGJ/T318-.
Preferably, in the step (3), the method for washing out the powder containing the stone powder and the mud powder from the sand sample to be tested is the washing out method described in the method for measuring the mud content in GB/T14684-2011.
Preferably, the method comprises the steps of:
(1) three main single-component clay minerals in the mud: mixing montmorillonite, kaolin and illite according to the mass ratio of 1:1:1, 4:1:1, 1:4:1 and 1:1:4 to prepare 4 kinds of mud powder, which are sequentially marked as mud powder 1, mud powder 2, mud powder 3 and mud powder 4;
(2) respectively taking 12 parts of the mud powder 1 prepared in the step (1), wherein the mass of each part of the mud powder 1 is 0g, 4.5g, 9.0g, 13.5g, 18.0g, 22.5g, 27.0g, 31.5g, 36.0g, 40.5g, 45.0g and 50.0g in sequence, adding stone powder into each part of the mud powder 1, and adding the stone powderThe powder mass is 50g, 45.5g, 41.0g, 36.5g, 32g, 27.5g, 23.0g, 18.5g, 14.0g, 9.5g, 5.0g and 0g in sequence, and 12 parts of mixed powder with the mass of 50g are obtained; taking 12 parts of 150g of standard sand, sequentially adding the obtained mixed powder to obtain 12 parts of test sand with the mass of 200g, respectively measuring the methylene blue MB value of each part of test sand, sequentially recording the test results as 0.60, 0.90, 1.25, 1.40, 1.60, 1.75, 1.85, 2.05, 2.20, 2.35, 2.65 and 2.95, and taking the mass percent X of the mud powder in the mixed powder112On the abscissa, methylene blue MB value Y112Drawing a linear regression curve for the ordinate to obtain a linear regression equation Y of 2.1187X +0.7453, R20.9845; mud powder 2, mud powder 3 and mud powder 4 are carried out according to the mode of processing mud powder 1, methylene blue MB values are respectively measured to be 0.60, 1.00, 1.35, 1.70, 2.00, 2.35, 2.65, 3.00, 3.20, 3.50, 3.85, 4.20, 0.60, 0.75, 0.95, 1.10, 1.25, 1.40, 1.50, 1.65, 1.75, 1.85, 2.00, 2.10, 0.60, 0.70, 0.85, 0.95, 1.10, 1.20, 1.35, 1.45, 1.55, 1.65, 1.75 and 1.95, and the corresponding linear regression equations are as follows: 3.5239X +0.7027, R2＝0.9978；Y＝1.4927X+0.6682，R2＝0.9920；Y＝1.3194X+0.6041，R2＝0.9973；
(3) Respectively carrying out chemical analysis tests on the 4 kinds of mud powder obtained in the step (1) to obtain the main oxide content E of the 4 kinds of mud powder1Then washing out the powder containing stone powder and mud powder of the sand sample to be tested, and carrying out chemical analysis test to obtain the main oxide content E of the powder2Will show table E2And table E1The content of main oxides of the 4 kinds of mud powder is contrastively analyzed, mud powder 3 with the content characteristics similar to that of the main oxides of the powder is found from the 4 kinds of mud powder, then methylene blue MB value Z of the powder is measured to be 1.25, Z is introduced into a linear regression equation Y of the mud powder 3 to be 1.4927X +0.6682, the mass percent X of the mud powder in the powder to be (1.25-0.6682)/1.4927 to be 0.3898 is obtained, and the mass of the mud powder in the powder to be M is further calculatedMud50-0.3898-50 (1.25-0.6682)/1.4927-19.49 g, stone powder content MStone (stone)＝50·(1-0.3898)＝50·[1.4927-(1.25-0.6682)]30.51 g/1.4927 g, and finally, according to mudSequentially calculating the mass ratios of the montmorillonite, the kaolin and the illite in the powder 3 to sequentially obtain 3.25g, 12.99g and 3.25g of montmorillonite, kaolin and illite in the mud powder;
TABLE E1
Figure BDA0002560199720000041
TABLE E2
Figure BDA0002560199720000042
The invention has the beneficial effects that: the invention provides a method for determining clay mineral composition and content of each component contained in mud powder in sand, which comprises the steps of determining MB values of test sand containing different amounts of mountain flour and mud powder, establishing a dynamic influence relation among the mountain flour, the mud powder and the MB values by using the same linear regression equation, drawing a linear regression curve and combining a chemical analysis testing technology, qualitatively determining the clay mineral composition contained in the mud powder in a sand sample to be determined, and carrying out quantitative calculation by combining the regression equation on the basis. And the main single-component clay mineral montmorillonite, kaolin and illite contained in the mud are mixed according to different proportions, so that the actual clay mineral composition conditions of the mud in different regions can be simulated, the combination with the actual production and application is realized, the guiding significance is provided for the determination and control of the clay mineral composition and content contained in the mud powder in the sand, and the gap of the research on the clay mineral composition and content of each component contained in the mud powder at present is also made up.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a linear regression graph relating to 4 kinds of mud powders plotted with the mass percentage of the mud powder to 50g of the mixed powder as the abscissa and the methylene blue MB value as the ordinate in example 1.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Example 1
Method for determining clay mineral composition and content of each component in mud powder in sand
(1) Three main single-component clay minerals in the mud: montmorillonite, kaolin and illite are mixed according to the mass ratio of 1:1:1, 4:1:1, 1:4:1 and 1:1:4 to prepare 4 kinds of mud powder which are sequentially marked as mud powder 1, mud powder 2, mud powder 3 and mud powder 4, and the condition of actually containing clay mineral composition in mud in different areas such as east China, southwest China is simulated;
(2) respectively taking 12 parts of the mud powder 1 prepared in the step (1), wherein the mass of each part of the mud powder 1 is 0g, 4.5g, 9.0g, 13.5g, 18.0g, 22.5g, 27.0g, 31.5g, 36.0g, 40.5g, 45.0g and 50.0g in sequence, adding stone powder into each part of the mud powder 1, and adding 50g, 45.5g, 41.0g, 36.5g, 32g, 27.5g, 23.0g, 18.5g, 14.0g, 9.5g, 5.0g and 0g of the stone powder in sequence to obtain 12 parts of mixed powder with the mass of 50 g; taking 12 parts of 150g of standard sand, sequentially adding the obtained mixed powder to obtain 12 parts of test sand with the mass of 200g, respectively measuring the methylene blue MB value of each part of test sand according to the method for measuring the methylene blue value of the limestone powder in JGJ/T318-Test results are sequentially recorded as 0.60, 0.90, 1.25, 1.40, 1.60, 1.75, 1.85, 2.05, 2.20, 2.35, 2.65 and 2.95, and the mass percentage of mud powder in the mixed powder is X112On the abscissa, methylene blue MB value Y112Plotting a linear regression curve for the ordinate, and obtaining the linear regression equation Y of 2.1187X +0.7453, R as shown in FIG. 120.9845; the mud powder 2, the mud powder 3 and the mud powder 4 are carried out according to the mode of processing the mud powder 1, and methylene blue MB values are respectively measured to be 0.60, 1.00, 1.35, 1.70, 2.00, 2.35, 2.65, 3.00, 3.20, 3.50, 3.85, 4.20, 0.60, 0.75, 0.95, 1.10, 1.25, 1.40, 1.50, 1.65, 1.75, 1.85, 2.00, 2.10, 0.60, 0.70, 0.85, 0.95, 1.10, 1.20, 1.35, 1.45, 1.55, 1.65, 1.75 and 1.95, linear regression curves of the three are shown in figure 1, and the corresponding linear regression equation is that: 3.5239X +0.7027, R2＝0.9978；Y＝1.4927X+0.6682，R2＝0.9920；Y＝1.3194X+0.6041，R2＝0.9973；
(3) Respectively carrying out chemical analysis tests on the 4 kinds of mud powder obtained in the step (1) to obtain the main oxide content E of the 4 kinds of mud powder1Then, according to the washing method recorded in the method for measuring the mud content in GB/T14684-2011, the powder of the sand sample to be measured containing the stone powder and the mud powder is washed out, and a chemical analysis test is carried out to obtain the main oxide content E of the powder2Will show table E2And table E1The content of main oxides of the middle 4 kinds of mud powder is contrastively analyzed, and the mud powder 3 with the content characteristics similar to the content characteristics of the main oxides of the powder is found from the 4 kinds of mud powder, and the characteristics are as follows: MgO and K contained in powder2O and Na2Less O and more CaO, then determining the methylene blue MB value Z of the powder to be 1.25 according to the test method of the methylene blue value of the limestone powder in JGJ/T318-Mud50-0.3898-50 (1.25-0.6682)/1.4927-19.49 g, stone powder content MStone (stone)＝50·(1-0.3898)＝50·[1.4927-(1.25-0.6682)]30.51 g/1.4927, and montmorillonite, kaolin and illite in the mud powder 3The mass ratio of the montmorillonite to the kaolin to the illite in the powder is 1:4:1, and the mass of the montmorillonite, the kaolin and the illite in the powder is calculated to be 3.25g, 12.99g and 3.25g in sequence.
TABLE E1
Figure BDA0002560199720000061
TABLE E2
Figure BDA0002560199720000062
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims (4)

1. A method for measuring the components and the contents of all the components of clay minerals contained in mud powder in sand is characterized by comprising the following steps:
(1) three main single-component clay minerals in the mud: montmorillonite, kaolin and illite according to the mass ratio a1:b1:c1、a2:b2:c2、a3:b3:c3……am:bm:cm……an:bn:cnMixing to obtain n kinds of mud powder, sequentially marked as mud powder 1, mud powder 2, mud powder 3 … … mud powder m … … mud powder n, wherein a is1、a2、a3……am……an、b1、b2、b3……bm……bn、c1、c2、c3……cm……cnBoth are greater than zero, m and n are positive integers greater than 0;
(2) respectively taking i parts of the mud powder 1 prepared in the step (1), wherein the mass of each part of the mud powder 1 is as follows0g, t g, 2t g, 3t g and 4tg … … jt g … … 50g, adding stone powder into each mud powder 1, wherein the mass of the stone powder is 50g, 50-t g, 50-2t g, 50-3t g and 50-4t g … … 50-jt g … … 0g in sequence to obtain i parts of mixed powder with the mass of 50 g; taking i parts of 150g of standard sand, sequentially adding the obtained mixed powder to obtain i parts of test sand with the mass of 200g, respectively measuring methylene blue MB values of the test sand, and sequentially recording test results as MB11、MB12、……、MB1iAnd the mud powder accounts for the mass percent X of the mixed powder1iOn the abscissa, methylene blue MB value Y1iDrawing a linear regression curve for the ordinate to obtain a linear regression equation Y1i＝h1X1i+k1T is greater than zero, i and j are positive integers greater than 0, and jt is less than 50; mud powder 2, mud powder 3 … … mud powder m … … mud powder n are carried out according to the mode of processing mud powder 1, and methylene blue MB value is respectively measured to be MB21、MB22、……、MB2i，MB31、MB32、……、MB3i，……，MBm1、MBm2、……、MBmi，……，MBn1、MBn2、……、MBniThe corresponding linear regression equation is: y is2i＝h2X2i+k2，Y3i＝h3X3i+k3，……，Ymi＝hmXmi+km，……，Yni＝hnXni+kn；
(3) Respectively carrying out chemical analysis tests on the n kinds of mud powder obtained in the step (1) to obtain a main oxide content E of the n kinds of mud powder1Then washing out the powder containing stone powder and mud powder of the sand sample to be tested, and carrying out chemical analysis test to obtain the main oxide content E of the powder2Will show table E2And table E1The contents of main oxides of the n kinds of mud powder are contrastively analyzed, the mud powder m with the characteristics similar to the main oxide content of the powder is found from the n kinds of mud powder, then the methylene blue MB value Z of the powder is measured, and the Z is introduced into the linear regression equation Y of the mud powder mmi＝hmXmi+kmObtaining the mass percentage X of the mud powder in the powdermi＝(Z-km)/hmFurther calculating the mass of the mud powder in the powder to be MMud＝50·Xmi＝50·(Z-km)/hmStone powder content MStone (stone)＝50·(1-Xmi)＝50·(hm-Z+km)/hmFinally, sequentially calculating the mass of the montmorillonite, the kaolin and the illite in the mud powder according to the mass ratio of the montmorillonite, the kaolin and the illite in the mud powder m;
TABLE E1
Figure FDA0002560199710000011
Figure FDA0002560199710000021
TABLE E2
Figure FDA0002560199710000022
α in tables 1 and 21+β1+γ1+1+1+ζ1+ν1＜100；α2+β2+γ2+2+2+ζ2+ν2＜100；
α3+β3+γ3+3+3+ζ3+ν3＜100；αm+βm+γm+m+m+ζm+νm＜100；
αn+βn+γn+n+n+ζn+νn＜100；αSample (A)+βSample (A)+γSample (A)+Sample (A)+Sample (A)+ζSample (A)+νSample (A)＜100。
2. The method of claim 1, wherein the methylene blue MB value of each test sand in step (2) and the methylene blue MB value Z of the powder in step (3) are determined by: a method for testing the methylene blue value of limestone powder in JGJ/T318-.
3. The method according to claim 1, wherein in the step (3), the method for washing out the powder of the sand sample containing the stone powder and the mud powder is the washing out method described in the method for measuring the mud content in GB/T14684-2011.
4. A method according to any of claims 1-3, characterized in that the method comprises the steps of:
(1) three main single-component clay minerals in the mud: mixing montmorillonite, kaolin and illite according to the mass ratio of 1:1:1, 4:1:1, 1:4:1 and 1:1:4 to prepare 4 kinds of mud powder, which are sequentially marked as mud powder 1, mud powder 2, mud powder 3 and mud powder 4;
(2) respectively taking 12 parts of the mud powder 1 prepared in the step (1), wherein the mass of each part of the mud powder 1 is 0g, 4.5g, 9.0g, 13.5g, 18.0g, 22.5g, 27.0g, 31.5g, 36.0g, 40.5g, 45.0g and 50.0g in sequence, adding stone powder into each part of the mud powder 1, and adding 50g, 45.5g, 41.0g, 36.5g, 32g, 27.5g, 23.0g, 18.5g, 14.0g, 9.5g, 5.0g and 0g in sequence to obtain 12 parts of mixed powder with the mass of 50 g; taking 12 parts of 150g of standard sand, sequentially adding the obtained mixed powder to obtain 12 parts of test sand with the mass of 200g, respectively measuring the methylene blue MB value of each part of test sand, sequentially recording the test results as 0.60, 0.90, 1.25, 1.40, 1.60, 1.75, 1.85, 2.05, 2.20, 2.35, 2.65 and 2.95, and taking the mass percent X of the mud powder in the mixed powder112On the abscissa, methylene blue MB value Y112Drawing a linear regression curve for the ordinate to obtain a linear regression equation Y of 2.1187X +0.7453, R20.9845; mud powder 2, mud powder 3 and mud powder 4 were measured in accordance with the method for treating mud powder 1, and methylene blue MB values of 0.60, 1.00, 1.35, 1.70, 2.00, 2.35, 2.65, 3.00, 3.20, 3.50, 3.85, 4.20, 0.60, 0.75, 0.95, 1.10, 1.25, 1.40, 1.50, 1.65, 1.75, 1.85, 2.00, 2.10, 0.60, 0.70, 0.85, 0.95, 1.10, 1.20, 1.35, 1.45. 1.55, 1.65, 1.75, 1.95, the corresponding linear regression equation is: 3.5239X +0.7027, R2＝0.9978；Y＝1.4927X+0.6682，R2＝0.9920；Y＝1.3194X+0.6041，R2＝0.9973；
(3) Respectively carrying out chemical analysis tests on the 4 kinds of mud powder obtained in the step (1) to obtain the main oxide content E of the 4 kinds of mud powder1Then washing out the powder containing stone powder and mud powder of the sand sample to be tested, and carrying out chemical analysis test to obtain the main oxide content E of the powder2Will show table E2And table E1The content of main oxides of the 4 kinds of mud powder is contrastively analyzed, mud powder 3 with the content characteristics similar to that of the main oxides of the powder is found from the 4 kinds of mud powder, then methylene blue MB value Z of the powder is measured to be 1.25, Z is introduced into a linear regression equation Y of the mud powder 3 to be 1.4927X +0.6682, the mass percent X of the mud powder in the powder to be (1.25-0.6682)/1.4927 to be 0.3898 is obtained, and the mass of the mud powder in the powder to be M is further calculatedMud50-0.3898-50 (1.25-0.6682)/1.4927-19.49 g, stone powder content MStone (stone)＝50·(1-0.3898)＝50·[1.4927-(1.25-0.6682)]30.51g of/1.4927, and finally calculating the mass ratios of montmorillonite, kaolin and illite in the mud powder 3 according to the mass ratios of montmorillonite, kaolin and illite in the mud powder in turn to obtain 3.25g, 12.99g and 3.25g of montmorillonite, kaolin and illite in the mud powder;
TABLE E1
Figure FDA0002560199710000031
TABLE E2
Figure FDA0002560199710000032
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