The filling system of gold industry limited by share ltd canzhuang gold mine tai
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Zhaojin Limited by Share Ltd Canzhuang Gold Deposit is located in Xin Zhuang Zhen Xi Shang Zhuang village in Zhaoyuan City, from Zhaoyuan city 35km. The mining method used for the mine to hydraulic horizontal slicing and filling method. Mine production practice in recent years proves that: mining methods currently used for gold mining conditions of Canzhuang, simple and reliable technology, low production cost, safe mining, adjacent stope has little effect, conducive to the production organization.
The Canzhuang Gold Mine Mining filling technology: cyclone will be classified tailings, tailings using a binder grade cement, cement sand ratio, concentration of 60-70% filling 1:4. From the filling technology parameters, cementing material properties and economic rationality are improved, the optimization space. This research task, is the study of whole tailings cementation filling performance, choose the better performance of cement cement, cement sand ratio and recommended more economical transportation concentration. In order to Canzhuang Gold mine filling parameters is technically feasible and economically reasonable, safe and reliable objective.
Through laboratory tests that Canzhuang Gold Mine Tailings gradation -200 accounted for 23.21%, -325 accounted for 6.34%, the average particle size of 0.13MM, through comprehensive analysis, Canzhuang Gold mine tailings is a coarse tailings gradation bad.
In order to carry on the cementing material separation ratio test, test of tailings composition analysis. By using XRD diffraction analyzer to analyze the phase of full tailings, that the main component of SiO2 mineral tailings.
According to the bidding mining method of gold mining industry Limited by Share Ltd Canzhuang Gold mining design, the filling process for the upward horizontal slice stoping hydraulic filling mining method, the initial setting time and strength requirements of high backfill, backfill and ultimate strength (28 days) the left and right can reach 2MP. Canzhuang full tailings filling aggregate selection, wide source, low cost, can also solve the problem of surface tailings. KY2# binder selection of cementitious materials, cement and good performance, to meet the strength of filling body under the conditions of higher proportion, can save cost, cementitious materials. Good fluidity, can meet the requirements of self filling.
According to the requirements of the final test results and mining technology, recommended the use of whole tailings cementation filling flow structure, filling technology parameters:
Aggregate: full tailings;
Cementing material: gold mining research to build R & D KY2# binder;
Cement sand ratio: 1:10;
Weight percent concentration: 68%;
Transportation: pipeline gravity;
Transport cost per cubic metre of cementitious material of filling body 49.20 yuan. The filling technology parameters to improve the existing classification of Canzhuang Gold mine tailings filling process, reduce the cost of filling. After the implementation of the mine by the horizontal sand silo instead of original vertical sand silo large capacity, can achieve high efficiency and energy saving, reduce environmental pollution, solve the mining activities caused by rock movement and subsidence problems.
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