Technology for filling of gob under well with adhesive filling materials

A technology of cemented filling and filling slurry, which is applied to filling materials, mining equipment, earth square drilling and mining, etc. It can solve the problems of discontinuous preparation of filling slurry, increased mixing time, and insufficient mixing, so as to save pressure filtration and Effects of tailings stockpiling cost, material transport reduction, and filling cost reduction

CN106884675AInactive Publication Date: 2017-06-23BLUESTAR LEHIGH ENG INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a technology for filling of a gob under a well with adhesive filling materials. First, tailing waste residues generated by a concentration plant are discharged from an ore-discharging valve at the bottom of a waste residue bin, fine materials are obtained through repeated crushing and sieving and transferred into a gravel finished product bin, then according to a proportion, the fine materials, ore slurry, adhesive materials and water are jointly fed into a filling slurry stirring system to be stirred uniformly to obtain the filling materials, and finally the filling materials are pumped into the gob under the well. The procedures where waste gravel is crushed during preparation of the filling slurry are simplified, and the procedure of ore grinding is omitted; the ore slurry generated by ore concentration of the concentration plant is adopted for improving the grade of the filling slurry, the stirring technology for the filling slurry is adjusted, continuity is achieved during preparation of the filling slurry, and filling cost is lowered.
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Description

technical field

[0001] The invention relates to the technical field of mine filling slurry, in particular to a process for filling underground mined-out areas with cemented filling slurry. Background technique

[0002] When the tailings produced by the gravity separation process are used as mine filling materials, it is necessary to carry out crushing and other treatment processes on the mineral processing waste slag produced in the dressing plant, and then process them below a certain particle size, and then mix them with cementing materials to prepare filling slurry and fill them to the goaf Area. However, the content of fine particles in the crushed material of waste residue is very low, and the fluidity of the slurry made from the crushed material is poor, and it is often necessary to add a large amount of cement or use a booster pump to transport it. In order to reduce cement consumption and improve the fluidity of filling slurry in China, multi-stage technological pro...

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] The invention discloses a process for filling underground mined-out area with cemented filling slurry, the steps are as follows:

[0033] 1) Release the tailings waste slag produced by the dressing plant from the waste slag bin through the ore-drawing valve, and transport it to the screening vibrating screen through the belt conveyor for the first stage of screening;

[0034] 2) The fine material under the screen is sent to the finished sand and gravel silo through the ...