Method for determining high-concentration filling slurry self-flowing conveying optimal slurry and application

A technology for filling slurry and determining methods, which is applied in filling, special data processing applications, earthwork drilling and mining, etc., can solve problems such as accuracy limitations, and achieve various performance guarantees, cost savings, blindness and workload reduction Effect

Pending Publication Date: 2019-08-06
EAST CHINA UNIV OF TECH
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Problems solved by technology

[0007] In order to solve the problem in the prior art that the accuracy of slurry suitable for pipeline transportation is limited, the present invention proposes a method for determining the optimal slurry for self-flowing transport of high-concentration filling slurry based on computational fluid dynamics analysis software

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  • Method for determining high-concentration filling slurry self-flowing conveying optimal slurry and application
  • Method for determining high-concentration filling slurry self-flowing conveying optimal slurry and application
  • Method for determining high-concentration filling slurry self-flowing conveying optimal slurry and application

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Embodiment Construction

[0054] The present invention is described in detail below in conjunction with embodiment:

[0055] Step 1: The waste rock and tailings used in the experiment all come from a copper mine, and the density of the waste rock crushed aggregate is determined to be 2815kg / m 3 , the packing density is 0.554, the fine grain material passing through the 0.25mm sieve is 6.4%, and the particle size is mainly concentrated between -15mm and +7mm. Large particles in pipeline transportation are easy to deposit, which is not conducive to pipeline transportation, so waste rock must be mixed with fine materials to improve gradation, increase interstitial effect and aggregate density.

[0056] Step 2: The density of tailings is 2897kg / m 3 , the packing density is 0.506, the weighted average particle size of tailings d 50 =0.149mm, the tailings gradation index n=0.501, the gradation is reasonable and the compactness is good. Generally speaking, the particle size of copper ore tailings is relati...

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Abstract

The invention relates to a method for determining high-concentration filling slurry self-flowing conveying optimal slurry, and belongs to the technical field of filling processes and application. Thehigh-concentration slurry and speed suitable for the self-flowing conveying can be accurately judged, and a better using effect is achieved. According to the present invention, modeling is carried outaccording to the actual mine filling pipelines, the waste rock and tailings are used as raw materials to prepare the high-concentration filling slurry, the conveying characteristic of the slurry in apipeline is studied, the change condition of the pressure loss along with the concentration and flow velocity during the conveying process and the condition of pressure loss at a bent pipe are analyzed, the flow and speed of the slurry suitable for pipeline conveying are determined, and theoretical reference is provided for the application of the high-concentration self-flowing filling technology.

Description

technical field [0001] The invention relates to a method for determining the optimal slurry for self-flow conveying of high-concentration filling slurry, which belongs to the technical field of filling technology and application. Background technique [0002] High-concentration filling has become the preferred filling mining method at home and abroad because of its advantages of no segregation, no precipitation, and good filling quality. Pipeline transportation is a crucial part of the entire filling mining technology, which determines the success or failure of the filling system. Realizing high-concentration artesian pipeline transportation is one of the core technologies for high-concentration filling. Compared with pumping, self-flow transportation relies on the self-weight of the slurry to overcome pipeline resistance for transportation. Its process is simple (no complicated pumping system), the equipment failure rate is low, and the economy is good, especially for the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50E21F15/08C04B28/00C04B111/70
CPCE21F15/08C04B28/00C04B2201/20C04B2201/10C04B2201/50C04B2111/00724C04B2111/70G06F30/20C04B7/147C04B18/12
Inventor 张修香乔登攀宋增凯黄温钢
Owner EAST CHINA UNIV OF TECH
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