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Mineral Processing EPC+M+O
Providing optimized solutions for your mine, one-stop service for mineral processing plant!
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Xinhai mineral processing equipment mainly include: grinding equipment, flotation equipment, dewatering equipment, magnetic separation equipment, and so on. Some of the equipment is Xinhai independent research and development, and has been awarded national patent. View details
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Solutions
Gold CIP Production Line adsorbs gold from cyaniding pulp by active carbon including 7 steps: leaching pulp preparation, cyaniding leaching, carbon adsorption, gold loaded carbon desorption, pregnant solution electrodeposit, carbon acid regeneration, leaching pulp. View details
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01 Mineral Dressing Test
Strive for the best recovery for you with rigorous test, accurate data and detailed report
I Preparation before test
The clients should provide about 50kg representative samples, some special samples about 200~1000kg. The simple test needs 30 working days, and the detailed test about half a year.
Sign the test contract with clients before the mineral dressing test, and make sure dressing process to test
II Testing process
1. Chemical Lab of Mineral Dressing Research Institute analyzes the material components (ore structure, mineral and types of ore) and chemical properties (elements, the particle size screening, density, ore relative grindability) of crude ore, and gets some data for the subsequent beneficiation test.
2. After the working of Chemical Lab, Mineral Dressing Research Room takes the mineral beneficiation test which tests the optimum conditions of dressing process. Testers take the exploratory testing at first relying on rich experience, and then the detailed testing including grinding fitness, reagent dosage, open and closed circuit test, etc. After obtaining the final products，testers should analyze them to get the recovery rate, and then takes sedimentation test of concentrate and tailings as references of equipment selection.
III Test results
After finishing all the tests, Mineral Dressing Lab writes a detailed “Mineral dressing test report” by summarizing the test process. In the last part of test report, the optimum technological process and technological parameters are presented.
" Mineral dressing test report" is important basis of next mine design, and brings significance of guiding actual production.
Notes: Recovery rate is the final result of mineral dressing test, and the core of dressing plant construction. Every 1% reduction of recovery rate cause huge losses, especially in gold, silver mine, so the purpose of mineral dressing test is to get the recovery rate as high as possible in order to reduce the loss of clients.
Xinhai Mineral Dressing Research Institute
Each dressing test of Mineral Dressing Research Institute is in strict accordance with the following steps (the following table data is from the relevant dressing test data of a client)
Various specifications of floatation test equipment
Specimen of ore
Spiral chute (experiment use) 
Sampling in the cyaniding process
Cyaniding leaching test of gold sample
Combustion sulfur testing device
Tester is working
Crusher (experiment use)
Cone ball mill (experiment use)
Sedimentation test
Mineral Dressing Test
Mineral Dressing Test
Preparation of sample
This part is described as preparation of sample used in test. The following sample process flow chart and preparation table is provide for clients
Preparation of sample
Preparation of sample
Sampling and processing flow chart of crude ore of mineral dressing test
Sampling and processing flow chart of crude ore of mineral dressing test
Test sample details and analysis results
Test sample details and analysis results
Crude ore properties determination
The crude ore properties determination includes: ore material component determination and ore chemical properties determination.
1, Ore material component determination
The ore material component determination includes structures, types and components of ore, metal and
non-metallic mineral characteristics. The following part of chart presents the ore material component
determination
| Crusher | Broken hematite particle size (mm) | Sieve Size (mm) |
|---|---|---|
| Jaw Crusher (Primary Crushing, Roughing) | 160-320 | — — |
| Gyratory Crusher(Roughing) | 125—1450 | — — |
| Cone Crusher (Secondary Crushing, Fine Crushing) | 22-75 | — — |
| Circular Vibrating Screen | — — | 0-12 |
| Auto Centering Vibrating Screen | — — | 6-12 |
Iron pyrite
Iron pyrite
Porphyritic texture
Quartz vein
2, Ore chemical properties determination
Ore chemical properties
determination includes crude ore multi-element analysis (to make sure if the ore can be comprehensively
recycled and used), crude ore particle size screening analysis, ore density determination and ore
relative grindability test. The following is related charts of ore tests
Results of crude ore multi-element analysis and relative grindability test
Results of crude ore multi-element analysis and relative grindability test
Grindability curve and crude ore particle size screening analysis results
Grindability curve and crude ore particle size screening analysis results
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Ore chemical properties determination
Ore chemical properties determination
Mineral dressing test
Mineral dressing test includes exploration test and mineral dressing conditions test
Exploration test primarily explores the mineral dressing conditions, and then gets better process condition. The detailed test follows the process condition determination including grinding fineness test, reagent test, open circuit and closed circuit test. The following is part of the chart of exploration test and detailed test for customers.
Flotation exploration test flow chart
Flotation exploration test flow chart
Grinding fineness test flow
Grinding fineness test flow
Reagent dosage test
Reagent dosage test
Open circuit test result and closed circuit result
Open circuit test result and closed circuit result
Final analysis result
This step takes the valuable element analysis and screening analysis of valuable mineral concentrate and tailings, and gets the recovery rate of valuable mineral
Main elements analysis result of Pb concentrate
Main elements analysis result of Pb concentrate
Pb concentrate
Pb concentrate
Main elements analysis result of tailings
Main elements analysis result of tailings
Sedimentation test
Sedimentation test as reference of equipment selection aims to concentrate and tailings of valuable mineral. The flowing is the sedimentation test result of Pb concentrate.
Pb concentrate sedimentation test result and sedimentation curve
Pb concentrate sedimentation test result and sedimentation curve
Sedimentation test
Sedimentation test
Tailings sedimentation test result and sedimentation curve
Tailings sedimentation test result and sedimentation curve
