Gravity Separation Wolframine Ore Tungsten Ore Processing Plant

• Customization: Available
• Type: Gravity Separator
• Voltage: 380V
• Model NO.: Tungsten Ore Processing Plant
• Weight: Depends on Model
• Material: Carbon Steel
• Material Feature: Wear-Resisting
• Certification: ISO9001:2008, CE
• Energy Saving: Energy Saving
• Warranty: 1 Year
• Color: as Per Requirement
• Customized: Customized
• Condition: New
• After-sales Service: 1 Years
• Model: 24tpd,48tp,100tpd,200tpd,500tpd etc
• Capacity: 24tpd-2000tpd
• Power: According to Capacity
• After Sale Service: Video Technical Support;Online Support; Field Inst
• Feature: High Recovery
• Original: Jiangxi,China
• Brand: Jxsc or OEM
• Transport Package: Standard Parts Packed in The Wooden Cases.
• Specification: 5000*1100*1100mm
• Trademark: JXSC
• Origin: Jiangxi, China

Product Description

Product Description

Tungsten

 

Major minerals of tungsten are essentially of two categories. The first is wolframite [(Fe, Mn)WO4], which contains iron and manganese tungstates in all proportions between 20 and 80 percent of each. The second is scheelite (CaWO4), which fluoresces a bright bluish colour under ultraviolet light.

 

Tungsten ore processing methods are mainly hand selection, aviation model selection, gravity separation, flotation, magnetic separation and electrostatic separation. In the tungsten processing plant, the extraction of wolframite is mainly gravity separation while white ore is mainly flotation. In order to comprehensively extract useful components, improve product quality and recovery rate of tungsten concentrate. The combination of mineral processing and smelting technology improves baking and leaching and other wet refining methods.

Wolframite gravity separation process

 

The wolframite ore has a high depletion rate, low grade, coarse grain size, high density, low hardness, easy mud formation and deep color, which is mainly extracted by the gravity separation process. China's wolframite ore beneficiation production has a history of more than 70 years and has accumulated rich experience, which can be summarized as the following parts.

 

 

1. Pre-enrichment, early throwing the waste rock, then washing, desliming, grading, crushing.

The dilution ratio of wolframite mining is generally around 80%. The amount of surrounding rock in the ore is large, and are easy to distinguish with wolframite containing rock. Pre-select the waste rock increases the beneficiation processing capacity and efficiency, and reduces the rock crusher wear.

2. Gravity separation, grading and sorting. Jig concentrator - shaker table to recover the coarse particle wolframite.

3. Fine wolframite slime concentration Fine wolframite slime includes primary and secondary slime, which accounts forabout 10% of the original ore. The tungsten grade is higher than the original ore, grade is 14% to 15%. Extract tungsten from slime is an important method for improving the tungsten recovery rate. Wolframite slime concentration machines have shaker tables, centrifugal concentrators, belt chute, flotation, magnetic separation. The fine mud recovery rate has increased from 10% ~ 50% to 60%~70%.

Scheelite flotation process

 

The scheelite accounting for 97.72% of the total amount of tungsten. The sulfide minerals mainly include pyrite, stibnite,
bismuth-copper-silver-ore, stibnite and a small amount of galena, sphalerite, beryllium ore, arsenic and bismuth. The gangue minerals are mainly quartz, mica and a small amount of calcite, apatite, etc.

The flowsheet shown includes gravity and flotation. It is recommended particularly for treatment of scheelite tungsten ores. It is assumed that no appreciable quantity of the scheelite is coarser than 4 mesh. The flowsheet is laid out to produce the highest possible quantity of 60% WO3 concentrates with a minimum of values being sent to the slime treatment section of the plant.

The Flowsheet for Tungsten & Scheelite Recovery

 

Crushing Tungsten Ore The crushing plant is designed for operation on an 8 hour per day basis. Precautions are taken to prevent over-crushing by using a grizzly with ¾" spacing ahead of the Jaw Crusher. Also, a Vibrating Screen is used ahead of the Crushing Rolls to remove fines. The crushing rolls are operated in closed circuit with the vibrating screen to insure a-4 mesh feed to the plant.Scheelite The -4 mesh product from the crushing plant passes to the 50 ton capacity fine ore storage bin.

 

Jigging for Tungsten in Scheelite

Crushed ore is fed at a controlled rate by means of the Adjustable Stroke Feeder to the Mineral Jig. Dilution water is added to provide a jig feed of 35% solids. The Mineral Jig, which handles the unclassified feed, is equipped with "center draw-off" arrangement for automatic discharge of coarse (+10 mesh) concentrates from the jig bed. The fine concentrates are discharged automatically from the hutch using a Dowsett Density Control Valve. Both the coarse and fine concentrates should approach 60% WO3, and free particles of tungsten as fine as 100 mesh would be expected in the concentrates.

 

Tungsten Tabling Circuit

Tailings from the jig flow by gravity or are pumped to the Hydraulic Classifier. Efficient tabling is
dependent upon proper feed sizing into coarse, medium, fine and slime fractions. The tables each produce (a) high grade
concentrates, (b) middling product, (c) tailing. The high grade concentrate is sent to the upgrading section of the mill for
removal of sulphides, iron and other impurities. At times the middling product will be of sufficient grade to be sent to this
section also.

 

Grinding Tungsten Rock

For maximum recovery, table tailings from the coarse, medium and fine tabling operations are sent to the
dewatering cone and thence to the Rod Mill equipped with peripheral discharge. The rod mill discharge then enters the circuit again as feed to the Mineral Jig where the newly liberated particles are concentrated. In this manner sliming and overgrinding are kept to a minimum.

Tungsten Flotation The tailings from the slime tables and the hydraulic classifier slime overflow pulp must be thickened to
approximately 20 to 25% solids for subsequent flotation. The underflow from the thickener is metered by a Adjustable Stroke Diaphragm Pump to the Conditioner where reagents are added. Common reagents and quantities per ton head feed used in the flotation of scheelite are as follows: Promoter-oleic acid about 1 pound; Dispersant-sodium silicate about one pound; pH Control-two to three pounds; Frother-not usually required with oleic acid.

 

The "Sub-A" Flotation Machine produces a rougher concentrate which is usually recleaned once to produce a concentrate which will assay approximately 13 to 15% WO3. The flotation concentrate is tabled to remove a high grade concentrate. The table tailings can be shipped to an acid plant for production of synthetic scheelite.

 

Five No. 6-S Wilfley Tables like the one below are fed by a Hydraulic Classifier to produce tungsten concentrate with sulphides, which are subsequently removed in a "Sub-A" Unit Flotation Cell.

Circuit for Cleaning Tungsten and Upgrading Scheelite

The Mineral Jig and Wilfley Table concentrates are sent to the upgrading section for removal of sulphides, garnet, magnetic iron, and other impurities. The sulphides are removed by "Sub-A" Flotation. This is usually a batch process using a Unit Cell. Concentrates are charged at 30% solids and after approximately 15 minutes all the sulphides have been removed.

 

The concentrates are then dried on a batch dryer and fed to a high intensity dry magnetic separator for removal of magnetic iron and garnet.

 

Sometimes, the concentrates contain excess phosphorous which can be removed by leaching with sulphuric acid. Calcite can be removed with a hydrochloric acid leach. Other impurities can be eliminated in like manner to produce concentrates which meet government or other market specifications.

 

Main Product

We have professional engineers team to draw flowchart based on customer's mine site details. We supplied full set tungsten ore processing plant: hopper, vibrating screen, Shaking table, Jig separator, ball mill, Roll mill, magnetic sepatrator, flotation separator, slurry pump, belt conveyor, etc.

 

 

Packaging & Shipping

Packing/Loading 
1. Some machines spare parts would be packed in wooden boxes to avoid broken. 
2. Usually the machines are fixed and loaded in container directly.

 

Shipping

1. Usually our mining machines are shipped in 40'HQ or Flat Containers by sea. 

2. Our mining equipments can be also shipped by air if customers request. 

 

Company Profile

Jiangxi Province County Mining Machinery Factory is a leading mining machinery manufacturer with over 30 years experiences,providing complete set processing equipments for Gold ore /Tin ore /Tungsten ore /Iron ore /Diamond/ Coltan ore / Silica sand /Zircon sand/ Black sand/Chrome ore/Cobalt ore/Antimony ore, ect. As well as complete set small laboratory mining machines.

1.Small parts packed in the wooden cases. 2.Big parts packed by plastic membrane. 3.The whole big machine is loaded in the container.

Shiping by sea/air freight or any way the customer requires.

FAQ

1.How is the quality of your products?(mining equipment/machine)
Answer: Our products are manufactured strictly according to national and international standard, and we will do a test on every machine before delivery.

2.Guaranteed?
Answer: All of our products are guaranteed for one year. If products quality is not consistent with the description or promise we
made before you place order, we promise 100% refund.

3.How about price?
Answer: For the complete same machine, we can promise our quality is the best when the price same as other competitors, and our
price can be lowest when the quality at standard level.

4.Service and Payment Terms?
Answer: We can accept T/T and L/C; 30% deposit, 70% balance before factory delivery, which is international trade practice;Finished product pictures will be provided to customers before delivery.

If you are interested in our products, please don't hesitate to contact us. Could you tell me the following questions, so that I can give you a complete solution, including best Exw-works Price Quotation!

1. Which machine do you need? Lab spiral chute,Lab vibrating screen, Lab Jig separator, Lab Shaking table, etc.
2. What is your raw ore that you plan to process? like gold ore, diamond ore, tantalite or silica sand, etc.
3. What is the capacity you need? Like 100kg per hour.
4. What is the feeding size to the machine? and what is the discharging-material size that you require?


Sincerely welcome to send your inquiry,you can get best quotation and professional service.