Analysis of beneficiation equipment for each section
Source: clirik By Administrator Posted: 2019-02-211) Crushing section: feeder, E-break, fine-breaking, fine crusher, hammer break, cone break, roll break, vibrating screen (optional)
2) Grinding classification section: ball mill, classifier, hydrocyclone, mixing tank
3) The ore dressing section: (refer to the above)
4) Tailing dry discharge section: thickener, filter press, vacuum disc filter, dewatering screen, dryer
5) Auxiliary equipment: silo, feeder (small), belt conveyor, screw conveyor, bucket elevator, clean water pump, slurry pump, on-site pipeline, trail, guardrail, etc.
Other common nouns
1. Grinding fineness: Refers to the required fineness of the material after grinding, generally expressed in %, which is an important indicator of the dissociation degree of the material.
2. Grinding concentration: refers to the relative ratio of material to water during the grinding process of the ball mill. The grinding concentration of the ball mill is generally 50%-60%, and the grinding concentration of 50% means that the ratio of material to water is 1:1. The grinding concentration will directly affect the fineness of grinding and the production capacity of the equipment, which requires special attention.
3. Returning sand ratio: After the material is ground by the ball mill, in addition to the material that meets the required particle size, there are large granular materials. The large granular material needs to be re-grinded, and the ratio of the large-grained material and the feeding amount that needs to be returned to the grinding is called return. Sand ratio, the larger the sand return ratio, the worse the equipment handling capacity;
4. Concentrate concentration: For the ratio of the weight of the slurry, material and slurry, it is called the pulp concentration (30g mine, 70g water, the pulp concentration is 30%). Different equipments have different requirements for slurry concentration. It is necessary to adjust the slurry before entering the equipment. The equipment involved is: flotation machine, shaker, chute, hydrocyclone, filter press, slurry pump, etc.
5. Mineral grade: The proportion of useful minerals in the ore, generally expressed as a percentage (%), and precious minerals expressed in g/t. This data is generally obtained by a method of assay analysis.
6. Mineral processing index (concentrate grade index): including concentrate grade, concentrate recovery rate, concentrate yield;
1) Concentrate grade: The grade of high grade ore (mineral powder) obtained after mineral enrichment. This indicator directly represents the quality of the concentrate. Can be used directly for sale or back-end smelting; without special instructions, refer to the Mineral Resources Industry Requirements Manual to find the concentrate requirements for different minerals.
2) Concentrate recovery rate: the ratio of the amount of target mineral metal in the concentrate to the amount of target mineral metal in the ore. This indicator is an important indicator in mineral processing and represents whether the target mineral is effectively selected. The lower the recovery rate, the unreasonable mineral processing process.
3) Yield: The ratio of the weight of the concentrate to the weight of the ore. It can be obtained directly by experiment or calculated based on concentrate grade and recovery rate. It can directly reflect the relationship between input quantity and output quantity.
7. Mineral hardness: The hardness referred to in mineralogy is usually referred to as the Mohs hardness, which is the hardness of the mineral compared to the Mohs hardness tester. From soft to hard, it is divided into ten grades: 1) talc, 2) gypsum 3) calcite 4) fluorite 5) apatite 6) feldspar 7) quartz 8) topaz 9) corundum 10) diamond. The difference in hardness between the stages is not equal, and only the relative size of the hardness is indicated between the levels.
8. Mineral density: mineral quality per unit volume
1) Actual density: the actual density of minerals
2) Bulk density: minerals of different sizes, density after accumulation (including material gap). Bulk density is required for mineral transport and powder material packaging. When calculating the ball of the ball mill, the bulk specific gravity of the steel ball is also used (the actual density of the steel ball is 7.85 tons/cubic, and the bulk specific gravity is 4.8 tons/cubic).
9. Beneficiation test: It is used to verify whether the mineral is optional and to explore suitable beneficiation process and beneficiation conditions.
1) Exploratory test: Through exploring experiments, try different mineral processing techniques, preliminarily judge the selectivity of the mineral, and whether it can select qualified concentrates.
2) Conditional test: On the basis of the exploratory test, a comparison test of different conditions of each beneficiation process is carried out to obtain a reasonable beneficiation index (which can be divided into grinding fineness, flotation reagent, flotation time, etc.)
10. Mineral analysis: analysis of various traits of the target mineral for the aid of the beneficiation test
1) Chemical analysis and inspection: the grade of the target mineral is obtained by chemical analysis.
2) Spectral full analysis: Using the relevant equipment, the approximate content of all elements in the mineral is analyzed; this step is semi-quantitative analysis, the result is not accurate, and can be used for reference.
3) X-ray diffraction analysis: analysis of the structural composition of minerals, facilitating the formulation of mineral processing plans
4) Rock ore identification: an important step for mineral analysis, used to determine the particle size, particle size distribution, existence state, proportion, etc. of the target mineral in the ore, assisted in the ore dressing test
5) Phase analysis: used to determine the chemical state of the target element, assisted ore dressing test
6) Dissociation analysis: used to determine the appropriate degree of dissociation of minerals for higher concentrate grades and recovery
11. Pharmacy system: mainly for flotation test, selection and ratio of various chemicals in flotation production; in the condition test, the types of drugs and dosages added at each stage will be determined. Flotation agents include: foaming agents, collectors, inhibitors, pH adjusting agents, and other dispersing agents, flocculants, etc.
12. Recommended Process: According to the beneficiation test, according to the beneficiation process, a suitable beneficiation process is developed. Including crushing, grinding, beneficiation, dry tailings, etc.
13. Process Flow Chart: Refer to the beneficiation process to visually reflect the entire beneficiation process flow through drawings. It is mainly used for early negotiation, allowing customers to have an intuitive understanding of the entire beneficiation process.
14. Equipment layout diagram: In the case of determining the beneficiation process and equipment selection, according to the on-site site drawings provided by the customer, all the associated equipments shall be arranged on the drawings, and the terrain gap shall be considered, and the relevant equipment shall be highly connected and matched. Used for on-site installation of equipment. In general, after the contract is signed, the equipment layout will be provided within one week.
