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Spring Cone Crusher
Hydraulic Cone Crusher
Round Vibrating Screen(YA)
Auto Centering Vibrating Screen
Linear Vibrating Screen
Energy Saving Ball Mill
Grid Type Ball Mill
Overflow Type Ball Mill
Submerged Spiral Classifier
SF Flotation Cell
JJF Flotation, Wemco Flotation
BF Flotation Cell
KYF Air Inflation Flotation Cell
Concentrating Table (Shaking Table)
Dry Magnetic Separator
Leaching Agitation Tank
Desorption Electrolysis System
High Efficiency Agitator Washer
Spiral Chute Washer
Efficient Improved Thickener
Peripheral Transmission Thickener
Efficient Deep Cone Thickener
High-Frequency Dewatering Screen
High-Efficiency Agitation Tank
Agitation Tank for Chemical Reagent
ZSW Vibrating Feeder
Walled Belt Conveyor
Electromagnetic Iron Remover
Electronic Belt Scale
NC Reagent Feeder
Mobile Pump Station
Double Stages Slurry Pump
Wear-Resistant Slurry Pump
Alloy Slurry Pump
Knife Gate Valve
Rubber Check Valve
Polyurethane Flotation Machine Rotor Stator
Impeller of Flotation Machine
Rubber Flotation Stator and Rotor
Coconut Activated Charcoal
Forged steel ball
High Manganese Steel Liner
With the rapid development of the global economy, steel industry has been developed rapidly. The increasing demand of iron ore at home and abroad further stimulates the development of the benefication of iron ore. As one of the leading enterprises in domestic mineral processing industry, Xinhai has been dedicated commitment to the research and development of iron extraction process and equipment for more than 20 years. According to the magnetic difference of different iron ore,
This iron extraction plant initially used stage grinding – single magnetic separation - fine screening and regrinding process. Xinhai increased cationic reverse flotation process for undersize concentrate. The final concentrate was obtained after one roughing and one cleaning. The reverse flotation froth was sent to regrinding after thickening and magnetic separation, then magnetic concentrate returned to reverse flotation for reprocessing. Finally, iron concentrate was increased from 65.43% to 68.88%.
Xinhai increased anionic reverse flotation process of magnetic concentrate on the basis of the single magnetic separation process. Iron ore concentrate was obtained directly with a roughing, tailings were discarded with three scavenging, middlings returned to efficient thickener. Finally, iron concentrate was increased from 64.25% to 67.22%.
The qualified iron concentrate of this project was obtained with Xinhai round vibrating screen - Xinhai magnetic separator. Oversize middlings were sent to closed-circuit grinding system (including Xinhai wet grid type ball mill and hydrocyclone) for fine grinding. And other qualified concentrates were gained by magnetic separation - fine screen - magnetic separation, then oversize material returned to thickening and magnetic separation for reprocessing. Finally, iron concentrate was increased from 67 % to 69 %, silicon dioxide was reduced from 6.5% to 4.5 %.
Strong magnetic iron ore belongs to free-milling mine, which can get high-grade iron concentrate with weak magnetic separation process. With the improving demand of iron ore concentrate, Xinhai has speeded up the research and innovation of magnetic iron extraction process and magnetic separation equipment in recent years, and achieved remarkable results.
Xinhai increases fine screening-regrinding process in two stage grinding, stage separation, single weak-magnetic separation process, which timely separates fine minerals, reduces the overgrinding and improves the processing capacity of ball mill. The iron concentrate grade increases by about 8%.
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One stage closed-circuit grinding and classifying system consists of ball mill and cyclone, which not only guarantees the classification efficiency and classification size, but also separates the qualified concentrate in advance.
Magnetic separation timely separates the qualified coarse grain concentrate and tailings. And this combined process reduces more flotation processing quantity and reagents than direct flotation and saves a lot of flotation production cost.
Strong magnetic process recycles fine grained iron ore that plays a role in desliming and tailings discarding. The reverse floatation process has simple reagent system that greatly reduces reagent into the pulp.
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