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The fluorite ore beneficiation equipment is mainly based on its beneficiation process plan. The process flow can roughly include several stages: crushing and screening - hand selection - grinding and classification - separation and purification - dehydration. The following editor will introduce the fluorite ore beneficiation equipment around these stages!
The main purpose of crushing and screening is to crush the mined fluorspar ore blocks into mineral particles below 100mm through technical means, so that the minerals Complete initial dissociation. According to the different properties of fluorite ore and different particle size requirements, a three-stage closed-circuit crushing, a three-stage open-circuit crushing or a two-stage closed-circuit crushing process can be adopted. If there are magnetic minerals in the process, an iron removal device will be installed. The main applications of fluorite crushing and screening equipment include: crushers, screens, feeders, belt conveyors, electronic iron removers, metal detectors, etc.
Crusher: Jaw crusher is used for coarse crushing, and cone crusher is used for fine crushing;
Screening machine:Circular vibrating screen is mostly used;
Feeder:According to the process design, there are trough feeders, electromagnetic vibrating feeders and swing feeders. Several options for feeders;
Belt conveyor:Mainly responsible for transporting minerals from each stage to the next link;
Electronic iron remover:< /strong>Generally located after a section of crushing, the existing iron-containing impurities are removed in advance during belt transportation;
Metal detector:Same as the electronic iron remover, located at After a section of crushing, it is mainly used to detect iron-containing impurities in the conveyor belt;
Hand selection is generally used as an auxiliary means to identify fluorite and fluorite with the naked eye. Gangue, through manual inspection, the ore fluorite is selected in advance. The process mainly includes the steps of washing, screening, and manual selection. The washed and screened raw ore is divided into large, medium, and small pieces according to particle size, and then hand-selected and stacked. The main fluorite equipment used in this stage is: vibrating screen and belt conveyor, and its application environment is generally set up in the crushing and screening stage.
Screening equipment:According to the situation of the factory, there are three types of equipment: circular vibrating screen, linear vibrating screen and self-centering vibrating screen.
Grinding and grading is to further grind the ore particles after crushing to achieve a monomer dissociation state. According to the properties of fluorite ore ore, Depending on the difference and the requirements for particle size, a one-stage closed-circuit grinding and classification process or a two-stage closed-circuit grinding and classification process can be used. The main fluorspar equipment used at this stage is: ball mill and classifier.
Ball mill:According to different grinding processes, the ball mills selected are also different, mainly grid-type ball mills and overflow-type ball mills. When a one-stage grinding and classification process is used, Grid-type ball mills are often used. When a two-stage grinding process is used, the first stage of grinding is generally a grid-type ball mill, and the second stage of grinding is an overflow-type ball mill.
Classifier: There are two types of hydrocyclone and spiral classifier. The cyclone is mostly used in combination with an overflow ball mill; the spiral classifier is mostly used with a grid ball mill. Use in combination.
The fluorite ore beneficiation and purification process is mainly based on gravity separation and flotation. Gravity separation mainly focuses on heavy medium pre-selection, while flotation focuses on To complete the separation of fine-grained fluorspar ore with monomer dissociation.
Gravity separation is suitable for sorting fluorite ore with a particle size range of 6-20mm and higher grade. When the raw ore is crushed to below 25-30mm , entering the screening and grading stage, and the mineral particles that meet the particle size requirements enter the gravity selection link to complete the sorting. The main fluorite equipment used in this stage is: jig, shaker and spiral chute.
Jig :Mainly used for processing fluorspar ore with coarser particle size, the processing particle size range is 30(20)~0.5mm;
Shaking table:Most suitable for processing Fine-grained fluorspar ore, processing particle size range is 2~0.037mm;
Spiral chute:Suitable for processing complex fluorspar ore and fine particles with low mud content. The processing particle size range is 0.1~0.37mm.
Whether it is a single fluorspar ore with a simple structure, or an associated (co-)fluorite ore with a complex structure, flotation can be used to complete the separation. Sorting is mainly achieved by adding suitable flotation reagents to change the mineral surface properties of fluorite ore and gangue ore. The main fluorspar equipment used at this stage is: mechanical agitation flotation machine and inflatable agitation flotation machine.
Mechanical agitation flotation machine: Mainly SF type flotation machine and BF type flotation machine. The SF type is suitable for processing medium and large fluorspar concentrators, doing roughing and sweeping operations; the BF type is mostly suitable for roughing and fine selection. Operation.
Inflatable agitation flotation machine: Mainly XCF type flotation machine and KYF type flotation machine, among which XCF type is suitable for roughing, sweeping and selection. Operation; KYF type is used for rough selection and sweeping operations. In addition, two flotation machines can form a combined unit, making the entire infrastructure horizontally constructed and effectively reducing infrastructure costs.
Fluorspar ore dehydration mainly consists of two parts: concentrate dehydration and tailings dehydration. Among them, concentrate dehydration mainly uses concentration equipment and filtration equipment to reach a certain water content, and then dried for industrial applications; fluorite tailings dehydration mainly depends on the tailings treatment requirements, and different tailings dry discharge can be used process to achieve dehydration. The main applicable dehydration equipment is: high-efficiency concentrator, chamber filter press, vacuum filter, cyclone and dehydration screen.
< strong>High-efficiency concentrator:Suitable for concentrate/tailings dehydration. An extra stage of dehydration is performed in the concentrate and a second stage of dehydration is performed in the tailings. The underflow concentration is 60~70%;
Chamber filter press/vacuum filter:Can be used for concentrate/tailings dehydration, mostly used in the final stage, when the moisture content of the slurry is lower than 9~12%;
Cyclone:Used in the first stage of dehydration in tailings dewatering, the underflow moisture content is 40~30%;
High-frequency dehydration screen:Mostly used Tailings dehydration is used in three-stage dehydration operations to make the final moisture content of the tailings between 12 and 15%.
The above are the mineral processing equipment commonly used in fluorite ore beneficiation. In the actual beneficiation plant, the fluorite ore beneficiation equipment is mainly determined according to the beneficiation process plan. Therefore, the editor recommends conducting a beneficiation test first, designing a reasonable fluorite ore beneficiation process through experimental analysis, and then customizing the appropriate fluorite ore beneficiation equipment. , to achieve the ideal return on investment.
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