1、PASTE2017,Xiaohui Liu 劉 曉 輝,Beijing JCHX Mine Technology Research Institute Co., Ltd., China 北京金誠信礦山技術(shù)研究院,Doctor 博士,Speaker/報告人:,JCHX Paste Backfilling Lab & Experimental Technique,Xiao-hui Liu,1.About JCHX,JCHX Mining Management Co., Ltd. is a professional mining service provider of mine engineerin

2、g, mine development and construction, contract mining, and research & development in non-ferrous, ferrous and chemical industries.,11 Subsidiaries 4 Branches 1 R&D Center 30 Mining Project Departments 1 Postdoctoral Programme,境內(nèi)外30余個項目部,JCHX Test Center,Financial support Theoretical basis Special eq

3、uipment Collaborative Innovation,2.Construction mode,JCHX Paste Backfilling Laboratory which located in Miyun economic development zone, Beijing, is jointly found by JCHX, USTB and Putzmeister.,JCHX Test Center,3. Construction plan,The lab was designed and established for fundamental research, pilot

4、-scale experiment and the paste backfilling plant production technical operation training.,ResearchTest Lab,Paste filling pilot-plant,Pilot-scale test for different technology route Data detection and acquisition in the whole experiment process Independent research and development,伺服壓力試驗機,Have more

5、than 40 sets of high precision instrument, can obtain 25 performance indicators of paste tailings.,混凝土流變儀,基本物理參數(shù),流動性測試儀器,滲透性測試儀器,激光粒度儀,4. Composition and function Materials physical performance test lab,The pilot plant includes more than 50 sets of equipment, and more than 120 automatic instruments.

6、,4. Composition and function - Paste filling pilot plant,5. Research projects,Paste filling plant design for Chambishi Copper Mine Paste filling plant design for Qijiaojing Iron Mine Experimental study on classed tailings Filling in Lala Copper Mine,深部金屬礦集約化連續(xù)采礦理論與技術(shù) 針對采空區(qū)進行尾礦充填的關(guān)鍵技術(shù)與裝備研發(fā) 膏體充填站數(shù)字化模型

7、及控制模塊開發(fā),Government sponsored research,Enterprise sponsored research,6.A pilot-scale experimental study on thickening of iron tailings,6.1 Test equipment,1. Underflow circulation,2.Floculant dosage,3.Rake,4. Underflow density test,Basic components Removable structural design Automatically controlled

8、The date is tested on-line,Tailings weighting,Mix with water,Tailings deep-cone thickening,6.2 Process flow and auto-control,6.A pilot-scale experimental study on thickening of iron tailings,Underflow density,6.3 Date detection and acquisition,Underflow flowrate,Feeding flowrate,Rake torque Feeding

9、concentration,torque,6.A pilot-scale experimental study on thickening of iron tailings,Flocculent condition in feed well,Flowing status of underflow,Overflow turbidity：72 % Flocculant dosage: 40g/t,6.4 Experimental result,6.A pilot-scale experimental study on thickening of iron tailings,7.1 Test equ

10、ipment,7. A pipe loop test for iron tailings paste,Qmax=50 m3/h； Pmax=7.5MPa,There are four test pipelines with different diameters, each pipeline is arranged in five trends. the total length of pipe is about 600 m，and 36 pressure transmitters are installed.,液壓換向閥試驗管道自動切換,7.1 Automatic control,7. A

11、pipe loop test for iron tailings paste,Process flow for pipe loop test,Flow rate within the pipes.,7.3 Date detection and acquisition,7. A pipe loop test for iron tailings paste,料漿流態(tài),Cw=75.6% S=26.3cm y=68 Pa D=150 mm,Frictional pressure drop (Mpa/km) VS Flow velocity （m/s）,flow state of paste in mi

12、xer,slump,7. A pipe loop test for iron tailings paste,7.4 Experimental result,8.1 Test equipment,Closed-circuit system 3 different sizes of hydrocyclone 5 monitoring points,closed-circuit,Flow meter,Pressure transmitter,Hydrocyclone,Electric valves,8.A pilot-scale experimental study on hydrocyclone

13、classification of a copper tailings,Tailings weighing,Mixing with water,Tailings hydrocyclone classification,8.2 Automatic control,8.A pilot-scale experimental study on hydrocyclone classification of a copper tailings,Overflow,The pilot can provide the basis for the engineering design of classified tailings filling.,PSD of overflow in different feeding pressure,8.3 Experimental result,8.A pilot-scale experimental study on hydrocyclone classification of a copper tailings,Since JCHX Paste Filling Lab was built, many experiments were carried out in this Lab, which provide the basis for des