Rapid analysis and compounding regulation and control methods for components of building spoil

A technology for building spoil and analysis methods, which is applied in the fields of analyzing materials, using wave/particle radiation for material analysis, measuring devices, etc., can solve the problems of less application of XRF method, detection accuracy depends on sample representativeness and digestion completeness, etc. Achieve the effect of improving detection efficiency, superior light-weight thermal insulation performance, and high sintering efficiency

Active Publication Date: 2020-05-19
TONGJI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the XRF method is still rarely used in the identification of construction spoil components.
Since its detection accuracy largely depends on sample representativeness and digestion completeness, a sample preparation method suitable for X-ray fluorescence analysis of construction spoil components needs to be proposed urgently

Method used

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  • Rapid analysis and compounding regulation and control methods for components of building spoil
  • Rapid analysis and compounding regulation and control methods for components of building spoil
  • Rapid analysis and compounding regulation and control methods for components of building spoil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] According to the above-mentioned rapid analysis method of chemical composition, X-ray fluorescence method was used to analyze the chemical composition of three kinds of construction spoils respectively, and the test results are shown in Table 2:

[0097] Table 2 Chemical composition distribution table of spoil

[0098]

Embodiment 2

[0100] This embodiment evaluates the No. 1 construction spoil in Table 2, and the evaluation results are as follows: due to the SiO in the construction spoil 2 too low, so doped with SiO 2 Diatomite as the main component supplements the silicon element in the spoil. At the same time, the drying sensitivity coefficient of the raw material is relatively large. Adding an appropriate amount of fly ash can significantly reduce the drying shrinkage during sintering. In addition, adding a small amount of ceramic glaze residue can reduce the harmful component SO in raw materials 3 Frost damage caused by excessive content.

Embodiment 3

[0102] This embodiment evaluates the No. 2 construction spoil in Table 2, and the evaluation results are as follows: Due to the Al in the construction spoil composition 2 o 3 The content is too low, so kaolin with relatively high aluminum content is added to supplement the aluminum element to meet the needs of the solid-phase reaction of raw materials; coal gangue is added as a raw material barren agent to reduce the plasticity and dry sensitivity of the spoil and improve the resistance of the finished bricks. folding strength. In addition, adding a small amount of sawdust can even out the heat source during roasting and improve fuel utilization.

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Abstract

The invention relates to a rapid analysis and compounding regulation and control methods for components of building spoil. The analysis method comprises the following steps: storing and mixing the building spoil in a tiling and direct taking manner to obtain a pre-homogenized raw material, then crushing, grinding, drying and screening the pre-homogenized raw material, mixing the material with water and a digestion agent, performing digestion, filtering, neutralizing and diluting an obtained digestion product, and performing XRF detection on the obtained digestion product as a to-be-detected solution to obtain the chemical composition and content; the compounding regulation and control method comprises the following steps: evaluating the applicability of the building spoil as a sintered brick raw material instead of clay by using an analysis method, and obtaining a formula of the sintered brick raw material according to an evaluation result. Compared with the prior art, the analysis method disclosed by the invention has the advantages of high operability, high repeatability, high detection speed, capability of simultaneously detecting the contents of various mineral elements and thelike, and the building spoil is converted into regular and balanced brick-making raw materials by combining the compounding regulation and control method such that the resource utilization of the building spoil is realized.

Description

technical field [0001] The invention belongs to the technical field of building materials and environmental engineering, and relates to a technology for resource utilization of construction waste slag, in particular to a method for rapid analysis and compounding control of construction waste components, and in particular to a rapid analysis of the chemical composition of waste soil. The measurement system and the composite control technology of fired brick raw materials with spoil as the main component. Background technique [0002] In recent years, with the rapid development of urban modernization, thousands of tall buildings have sprung up, and the disposal of piles of construction waste has become a major problem hindering urban construction. Ordinary incineration, landfill and other treatment methods have been unable to meet the needs of construction waste. The rapid growth rate occupies a large amount of manpower and land resources, and also poses a great threat to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223G01N1/44
CPCG01N1/44G01N23/223
Inventor 肖建庄王紫玥郝潞岑高琦
Owner TONGJI UNIV
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