Antimony Ore Processing
Antimony ore is divided into antimony oxide and sulfide, common types of antimony ore include stibnite, valentinite, and kermesite. Antimony beneficiation solutions include crushing, screening, grinding, gravity separation, flotation, and concentration.
JXSC supports tailored antimony processing plants for your ore type, achieving a 90%+ recovery rate, which can be used for the beneficiation of various antimony ores, such as antimony sulfide ore, sulfide-oxidation mixed antimony ore, stibnite, tungsten-antimony-gold polymetallic sulfide ore, tin-lead-antimony-zinc polymetallic sulfide ore, etc.
Antimony Beneficiation process
1. Hand Selected
Antimony ore is often produced as coarse monomer crystals or massive aggregate crystals. Due to the large differences in color, luster, and shape between antimony-containing minerals and gangues in antimony ore, it is convenient to hand-select.
To improve the efficiency of manual separation, ore washing should be carried out first to remove sludge impurities. Due to the relatively large volume of the original ore of stibnite, it needs to be crushed to be sorted in the next step.
2. Gravity Separation
Gravity separation is mainly suitable for the antimony oxide ore and coarse-grained stibnite processing, and can also be used for pre-selection and enrichment of antimony sulfide ore before flotation. The common stibnite, yellow antimony, red antimony and antimony are minerals with high density and coarse particle size separated from gangue by gravity separation. Especially for the pre-selection of low-grade antimony ore, it has a very good effect.
3. Flotation Process
Flotation is applied to fine-grained disseminated antimony sulfide ore. It has a high beneficiation index and recovery rate.
- The commonly used single flotation method is suitable for processing single antimony ore.
- The combined gravity separation-flotation method is suitable for treating antimony ore with uneven particle size. For example: tungsten-antimony-gold polymetallic sulfide ore, antimony-arsenic-gold polymetallic sulfide ore, tin-lead-antimony-zinc polymetallic sulfide ore, antimony-lead-zinc-mercury polymetallic sulfide ore and arsenic-antimony-gold polymetallic sulfide ore, etc. The purpose of re-election is to discard a large amount of waste rock and reduce the cost and equipment investment of subsequent flotation.
Antimony Processing Plant
Antimony gravity separation plant
25TPH Antimony Ore Gravity Separation Plant
- Crushing & Grinding (Optional): Large materials are first crushed to a fine particle size using crushers and grinding equipment. For example, a jaw crusher is used for coarse crushing to below 50mm, followed by a cone crusher for fine crushing to 10-15mm, ensuring the particle size is suitable for grinding. A ball mill and spiral classifier form a closed-circuit grinding system to release antimony mineral monomers.
- Gravity Separation Process: -2mm particle size slurry is first deslimed by a hydrocyclone and then enters a three-stage spiral chute for separation. The concentrate from the first and second stage roughing is sent to the third stage cleaning stage; the tailings from the first and third stages enter the second stage scavenging stage; the tailings from the second stage are the final gravity separation tailings.
- Dewatering: The tailings are dewatered by a dewatering screen and then transported to a tailings pile; the antimony concentrate produced from the third stage cleaning stage is filtered and dewatered by a hydrocyclone and then sent to a concentrate pile.
This antimony ore gravity separation process is chemical-free, environmentally friendly, and efficient; the process is simple, requires low investment, and is highly adaptable. The final concentrate grade is 25%-30% to ≥50%.
Sulfide antimony processing plant
This is cpmplete 300TPD sulfide antimony flotation process plant with spiral chutes for tailing. It mainly includes the following equipment and flow details:
Chute feeder -> Jaw crusher -> Fine jaw crusher -> Vibration screen -> Electromagnetic feeder -> Ball mill -> Slurry pump -> Spiral classifier -> Flotation machines -> Thickener -> Disc vacuum filter machine -> Spiral chute -> Shaking table -> Cone thickener -> Plate filter press
300TPD Antimony flotation & gravity separation plant flow
(1). Crushing & screening: The chute feeder automatically feeds the stones to the jaw crusher. The jaw crusher crushes the big stones into small materials; then the fine jaw crusher makes the stones into fine sands. The vibration screen is for sieving more than 20mm back to the fine jaw crusher, and 0-20mm to the storage bin.
(2). Grinding stage: The storage bin+electromagnetic feeder automatically feeds the materials to the ball mill. The ball mill grills the fine sands to 0-1mm, combined with the spiral classifier to ensure the final product’s size is 0-0.074mm.
(3). Flotation stage: The No.1 slurry pump transports the overflow from the spiral classifier to the flotation machine. The flotation machine is for getting the antimony concentrate with chemicals.
(4). Gravity separation: The tailings of the flotation machine will pump to the spiral chutes to recover the antimony, and the antimony concentrated from the spiral chute will go to the shaking table concentrate again.
(5). Concentrate & drying: The antimony concentrate of the flotation machine will go to the thickener and then to the disc vacuum filter machine to get dry final products. The tailing of the spiral chute and shaking table will pump to the cone thickener and then to the plate filter machines to recycle the water from the tailings.
Notes: The capacity of this complete antimony (sulfide/ stibnite) processing plant can be designed per request, such as 10 tph, 50 tph, 100 tph, etc. Furthermore, a centrifuge concentrator can replace the spiral chutes in the process flow. Antimony ore after gravity separation is usually purified by flotation; the actual needs need to be modified according to the mine conditions.
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