Tungsten Ore Processing Machine

Cone crusher or cone breaker is used to crush raw materials in the following industries like metallurgy, building materials, road building, chemical and silicate industries.

Handling Materials Of Cone Crusher:

Approach adopted in new technology to evade technological gap in the existing one

The new technology developed at the National Metallurgical Laboratory, Jamshedpur adopts an integrated approach combining physical and chemical beneficiation methods to get the final product : ammonium para tungstate. In order to avoid tungsten losses in the fine size ranges, prior to final concentration, pre-concentration of the ore is carried out at relatively coarser size.

Advantage

The advantages of this technology includes the following

Higher recovery of tungsten values and the process results in the final product as ammonium para tungstate by a combination of physical & chemical methods.

Reductions in energy towards comminution of ore by carrying out pre-concentration at relatively coarser size.

Reduction in water consumption because pre-concentration is a dry processing step etc.

Brief description

Extensive characterisation and physical & chemical beneficiation studies were undertaken at the National Metallurgical Laboratory, Jamshedpur on different tungsten ore samples from a typically low grade deposit located in Degana, Rajasthan, India. Based on these studies a process has been developed for the recovery of tungsten values from the low grade tungsten ore. The process basically consists of pre-concentration of the ore at relatively coarser size by dry magnetic separation, further upgradation by gravity methods followed by chemical processing to ammonium para tungatate.

 

Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Details of Present/existing/Technology. Shortfall/Technological gaps in the existing technology

Due to high density and high temperature properties, tungsten is a very important metal both strategically and industrially. Most of the present demand is met through imports of powder and concentrates. The available Indian deposits are of very low grade ranging from 0.04 to 0.2 % WO₃ against the commonly exploited ore grades of 0.5% WO₃ world over.

The existing process for the beneficiation of tungsten ore basically consists of processing of the ore by physical methods like gravity and magnetic separation to get the concentrate. But considering the low metal content and the fine dissemination of tungsten bearing minerals in the gangues in the run-of-mine ore, normally it is difficult to get the desired grade of the concentrate. Alternatively, efforts of obtaining a high grade concentrate by fine sized pulverisation and multi-stage processing leads to high losses of tungsten values. There has been a need to develop a suitable process for the recovery of tungsten values from lean grade ores. The new technology addresses this problem.

 

Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten ore Beneficiation Process

Application Type: beneficiation production line

Beneficiation technology as follow:

1. Flotation and Gravity technology

2. Flotation and Magnetic Separating technology

3. Gravity and Magnetic Separating technology

4. Flotation, Gravity and Magnetic Separating technology

Tungsten ore beneficiation production line composed of jaw crusher,ball mill, classifier, magnetic separator, flotation machine,concentrator and dryer and other major equipment, with feeder,hoists,conveyors can be composed of a complete beneficiation production line. The production line has high efficiency,low-energy, high handling capacity,economic rationality.

 

Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

The hardness and density of tungsten are applied in obtaining heavy metal alloys. A good example is high speed steel, which may contain as much as 18% tungsten. Superalloys containing tungsten, such as Hastelloy and Stellite, are used in turbine blades and wear-resistant parts and coatings. Applications requiring its high density include heat sinks, weights, counterweights, ballast keels for yachts, tail ballast for commercial aircraft, and as ballast in race cars for NASCAR and Formula 1. It is an ideal material to use as a bucking bar for riveting, where the mass necessary for good results can be achieved in a compact bar. In armaments, tungsten, usually alloyed with nickel and iron or cobalt to form heavy alloys, is used in kinetic energy penetrators as an alternative to depleted uranium but may also be used in cannon shells, grenades and missiles to create supersonic shrapnel. High-density alloys of tungsten may be used in darts (to allow for a smaller diameter and thus tighter groupings) or for fishing lures (tungsten beads allow the fly to sink rapidly). Some types of strings for musical instruments are wound with tungsten wires. Its density, similar to that of gold, allows tungsten to be used in jewelry as an alternative to gold or platinum. Its hardness makes it ideal for rings that will resist scratching, are hypoallergenic, and will not need polishing, which is especially useful in designs with a brushed finish.

Tungsten compounds are used in catalysts, inorganic pigments (e.g. tungsten oxides), and as high-temperature lubricants (tungsten disulfide). Tungsten carbide (WC) is used to make wear-resistant abrasives and cutters and knives for drills, circular saws, milling and turning tools used by the metalworking, woodworking, mining, petroleum and construction industries and accounts for about 60% of current tungsten consumption. Tungsten oxides are used in ceramic glazes and calcium/magnesium tungstates are used widely in fluorescent lighting. Crystal tungstates are used as scintillation detectors in nuclear physics and nuclear medicine. Other salts that contain tungsten are used in the chemical and tanning industries.

Lately, tungsten is used for jewelry because of its longevity and high durability.

 

Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Due to its conductive properties, as well as its relative chemical inertia, tungsten is also used in electrodes, and in the emitter tips in electron-beam instruments that use field emission guns, such as electron microscopes. In electronics, tungsten is used as an interconnect material in integrated circuits, between the silicon dioxide dielectric material and the transistors. It is used in metallic films, which replace the wiring used in conventional electronics with a coat of tungsten (or molybdenum) on silicon.

The electronic structure of tungsten makes it one of the main sources for X-ray targets, and also for shielding from high-energy radiations (such as in the radiopharmaceutical industry for shielding radioactive samples of FDG). Tungsten powder is used as a filler material in plastic composites, which are used as a nontoxic substitute for lead in bullets, shot, and radiation shields. Since this element's thermal expansion is similar to borosilicate glass, it is used for making glass-to-metal seals. 



 

Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten is found in the minerals Wolframite (iron-manganese tungstate, FeWO₄/MnWO₄), Scheelite (calcium tungstate, (CaWO₄), ferberite and hübnerite. These are mined and used to produce about 37,400 tons of tungsten concentrates per year in 2000. China produced over 75% of this total, with most of the remaining production coming from Austria, Bolivia, Portugal, and Russia.

Tungsten is extracted from its ores in several stages. The ore is eventually converted to tungsten(VI) oxide (WO₃), which is heated with hydrogen or carbon to produce powdered tungsten. It can be used in that state or pressed into solid bars.

Tungsten can also be extracted by hydrogen reduction of WF₆ (WF₆ + 3H₂ → W + 6HF) or pyrolytic decomposition (WF₆ + energy → W + 3F₂).

Because it retains its hardness at high temperatures and has a high melting point, elemental tungsten is used in many high-temperature applications, such as light bulb, cathode-ray tube, and vacuum tube filaments, heating elements, and rocket engine nozzles. Its high melting point also makes tungsten suitable for aerospace and high-temperature uses such as electrical, heating, and welding applications, notably in the gas tungsten arc welding process (also called TIG (tungsten/inert gas) welding). 

 

Tungsten Powder Manufacturer & Supplier: Chinatungsten Online - www.tungsten-powder.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

This article is mainly about tungsten electrode comparison on their features, including cerium tungsten electrode, yttrium tungsten electrode and compound rare earth tungsten electrode. Their comparison is shown as following.

Cerium tungsten electrode
Grade - WCe10/ WCe15/ WCe20 (adding CeO₂)
Features – Cerium tungsten electrode doesn’t have radioactivity and it is environment - friendly. Under low current circumstances, it is easier to arcing and can maintain at low arc current. It is suitable for the pipelines and small components welding, including discontinuous welding.

Yttrium tungsten electrode
Grade - WY20 (add Y₂O₃)
Features – Yttrium tungsten electrode has no radioactive. It has slim and longer arc beam with high compression; under medium and high current conditions, it has deeper burning groove.

Compound rare earth tungsten electrode
Grade – WM_X (addictive is MOx)
Features –Yttrium tungsten electrode is a compound of several (more than two) rare earth oxide; each kind of additive will improve performance of tungsten electrode to a better degree.

 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.com.cn
 Tel.: 86 592 5129696; Fax: 86 592 5129797
 Email: sales@chinatungsten.com
 Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
 Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

There are some common and different points of tungsten electrodes(such as, pure tungsten electrode,lanthanum tungsten electrode and thorium tungsten electrode) showing in this article, and that is comparison.

Type and their comparison can be seen as below:

Pure tungsten electrode
Grade – WP
Features – Pure tungsten electrode is non-radioactive and suitable for AC welding of magnesium, aluminum and their alloy.

Lanthanum tungsten electrode
Grade - WLa10/ WLa15/WLa20
Features – Lanthanum tungsten electrode is also non-radioactive which owns the following features: high current carrying capacity; minimum ratio of burnt area; nice welding capacity; excellent electric conductivity. It is a substitute for thoriated tungsten electrode and mainly applied in DC welding.

Thorium tungsten electrode
Grade - WTh10/ WTh20
Features – Thorium tungsten electrode has excellent electron emission and other good performances, which also owns high current carrying capacity and is suitable for DC welding of stainless steel, carbon steel, nickel and titanium alloy as well. But it has radioactivity that will harm people’s health, so when exposed to it, you should wear protective clothing.

 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.com.cn
 Tel.: 86 592 5129696; Fax: 86 592 5129797
 Email: sales@chinatungsten.com
 Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
 Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

What described in this article is that the comparisons on tungsten electrodes, there are cerium tungsten electrode, yttrium tungsten electrode and compound tungsten electrode. Something about their grade, color , dopant, surface and the like.

The comparison of tungsten electrode in some aspect is shown below.

Attention: G means Ground, S means Swaged, E means electrolytic polished and D means as drawn.



 

Tungsten Metals Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten.com.cn
 Tel.: 86 592 5129696; Fax: 86 592 5129797
 Email: sales@chinatungsten.com
 Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
 Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
 Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn