What are the main contents of mineral processing tests?

The small-scale process test in the laboratory is the basic experiment of the mineral processing process test. Generally, mineral processing tests start with small-scale tests in the laboratory and then gradually expand in scale. The content of each stage of the test is determined according to the purpose of the test. At present, the contents of various mineral processing tests mainly include the following aspects:

1. Research on the properties of raw ore

The research on the properties of raw ore mainly includes spectral analysis, multi-element analysis or full analysis, gold assay analysis, microscopic identification, phase analysis, particle size analysis, heavy liquid separation, determination of physical and mechanical properties of ore and other necessary analytical research contents.

2. Experimental study on crushing and grinding process

The laboratory will carry out the following tests and measurements during the year-end process flow test: work index measurement, grindability measurement, abrasion index test, self-grinding media performance test, ore washing and overflow treatment test, ore pre-selection test research, grinding method and grinding process test research, and grinding product analysis.

3. Ore dressing method and process test research

This part mainly includes the research of mineral processing methods and the test of mineral processing conditions, the test research of mineral processing flow structure, the recommended process flow, and the analysis of mineral processing products. The mineral processing condition test includes: flotation, gravity separation, magnetic separation, roasting magnetic separation, heavy medium mineral processing, electric separation, optical separation, mineral processing reagents, fuels, media and other main materials selection comparison tests.

The research on the sorting process structure test mainly includes:

1. Determine the number of selection sections

2. Explore the reasonable number of sweeping and concentration operations to maximize the concentrate grade and recovery rate

3. Identify the nature of the intermediate ore and determine a reasonable location for its return and a separate treatment plan.

4. Carry out open circuit process comprehensive condition test based on sufficient unit condition test. During the test, attention should be paid to the stability of process and operating conditions, and the indicators should be reproducible.

5. Based on the open circuit process test, conduct a closed circuit process test.

Recommended process

Conduct multiple scheme tests on mineral processing methods, process flow and separation conditions, and recommend mineral processing process flow based on comparative tests of 1-2 schemes.

Ore dressing product analysis

Chemical analysis, particle size analysis, phase analysis, and determination of mechanical and physical properties of concentrates, middlings, and tailings products should be performed

4. Product dehydration test study

Carry out sedimentation velocity tests on concentrates and tailings and draw sedimentation velocity curves.

V. Environmental Protection Experimental Research

The tailings water, concentrate water, other sewage, harmful gases and waste residues in the process are tested and analyzed to meet the national pollution discharge standards. At the same time, the use of mineral processing agents that are harmful to the human body and agriculture, forestry, animal husbandry and fishery, and polluting to the environment is minimized or not used.