A Rheology-Based Judgment Method for Filling Settling Performance
A filler and rheology technology, which is applied in the field of determining the sedimentation performance of fillers based on rheology, can solve problems such as uneconomical engineering angles and pipeline wear, and the method is scientific, scientific, and convenient to judge Effect
Active Publication Date: 2021-02-12
UNIV OF SCI & TECH BEIJING
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Problems solved by technology
On the contrary, if the slurry is not settled by increasing the flow rate, it is not economical from an engineering point of view, because the increase in flow rate will accelerate the wear of the pipeline
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[0022] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments.
[0023] The invention provides a rheology-based method for judging the sedimentation performance of a filling material.
[0024] The method includes the following steps:
[0025] S1: According to the actual situation and needs of the mine, it is equipped with filling materials of different mass concentrations;
[0026] S2: Test the rheological parameters of the prepared filling materials with different mass concentrations, and obtain the slurry with different mass concentrations at 0-120-0s -1 Rheological curve under shear rate conditions;
[0027] S3: According to the trend characteristics of the rheological curve obtained in S2, the sedimentation performance of the slurry is divided into three types: obvious sedimentation, basicall...
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The invention provides a method for judging the sedimentation performance of filling materials based on rheology, which belongs to the technical field of filling. In this method, paste materials with different ratios are prepared according to the actual situation and needs of the mine, and then the rheological parameters of the paste under different mass concentrations are tested to obtain the characteristic curve of paste shear stress-shear rate. Finally, according to the shape of the rheological curve, the sedimentation performance of the paste slurry was divided into three stages: obvious precipitation, almost no precipitation, and no precipitation. The method has good universality for different types of filling slurries, convenient and fast detection, simple judgment, and is suitable for various tailings filling slurries. Based on the rheological experiment, the present invention makes the sedimentation performance judgment change from the traditional naked eye qualitative judgment to the quantitative definition of the experiment, and has more guiding significance for actual pipeline transportation. This method is suitable for various mining enterprises using tailings filling technology such as nonferrous metals, ferrous metals, precious metals, rare metals, and gold.
Description
technical field [0001] The invention relates to the field of filling technology, in particular to a rheology-based method for determining the sedimentation performance of a filling material. Background technique [0002] With the continuous increase of mining depth and the gradual enhancement of people's awareness of environmental protection, the backfill mining method has been deeply rooted in the hearts of the people, and more and more mines have begun to use the backfill method. During the pipeline transportation of filling materials, if the concentration is low, the separation of coarse and fine particles is likely to occur, and the coarse particles are gradually deposited in the pipeline with the filling material transportation, which eventually leads to the occurrence of pipe blocking accidents. Mine is more likely to happen. Generally speaking, increasing the filling concentration to make the coarse and fine particles in the tailings stagger and support each other is...
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IPC IPC(8): G01N11/14
CPCG01N11/14
Inventor 王勇吴爱祥尹升华王洪江王贻明王少勇
Owner UNIV OF SCI & TECH BEIJING