Description of products:

Extraction or production of tantalum raw materials of all kinds is widespread, whether by primary industrial mining, artisanal mining, as a secondary mineral or as a byproduct. Brazil is currently the major producer. Significant quantities are also produced in China, the DR Congo, Russia and Rwanda. Additional quantities are produced, some intermittently or at a low level, in Australia, Burundi, France, Malaysia, Mozambique, Namibia, Nigeria, Thailand and Zimbabwe.

Coltan is the name for columbo-tantalite mined in Africa. It is a crucial raw material for the production of modern electonics. When refined, the ore becomes tantalum, which is particularly well-suited for use in electric capacitors, because of its ability to hold high electic charges. (Burge & Hayes, 2002) Coltan is used in cellular phones, computers, jet engines, missiles, ships, and weapons systems. (Montague, 2002) Without coltan the digital age economy would grind to a halt.
Outisde of the Democratic Republic of the Congo, coltan mining takes place in Australia, Brazil, Canada, China, Burundi, and Rwanda. Other nations, such as Russia, are rich in the resource, but have not exploited their deposits. Australia produces 60% of the world’s tantalum, but the world’s largest reserves are in the Democratic Republic of Congo. (Burge & Hayes, 2002) In fact, Africa accounts for four-fifths of the world’s tantalum. (Montague, 2002)
Sixty-four percent of the world’s reserves of coltan are in Democratic Republic of the Congo (DRC), a nation racked by poverty and war. (Montague, 2002) Rapidly increasing consumption of electronics in developed nations in 2000 depleted tantalum stockpiles. (Burge & Hayes, 2002) Coltan prices soared to $500 per pound, as free-market forces sought to correct the balance of supply and demand. (US Geological Survey, 2001) This free market correction came at acute environmental and human costs.
The extraction of coltan is a process that heavily influences the surrounding environment. Coltan is found in high concentration within the boundaries of Kahuzi Biega National Park, home of a rich tropical forest ecosystem. In 2001 more than 10,000 men, women, and children moved to mining camps in Kahuzi Biega National Park, motivated by the rare opportunity to earn a living wage. (Redmond, 2001) Miners depended on the forest for sustenance, and relied on bushmeat for animal protein. The implications for local biodiversity, especially large mammals, were devastating. Estimates of elephant and lowland gorilla mortalities are 3,700 and 8,000 respectively. (Redmond, 2001) The strain put on wildlife by over-hunting was compounded by habitat loss due to deforestation. Forests were cleared to set up mines and camps. Just as severe as the initial deforestation was the sustained exploitation of wood for fuel.

The project is located in Congo, Dem. Rep., full sets of equipment for tantalum & niobium and tin ore roughing to deep processing, equipment list has vibration screen, trommel screen, spiral chute, shaking table, magnetic separator, electrostatic separator and conveying equipment, final plan determined together by our company R&D department, early stage finished whole ore testing, every indicators of testing result reached the requirements of customer.

spiral concentrator is our company's concentrating experienced scientific product, which is the best concentrating equipment, especially for concentrating sand ore in seashore and riverside.

The product is made of the fiberglass lined with wear-resistant polyurethane and corundum cover; the advantages are light, moisture proof, and anti-rust, corrosive proof and no noise, properly suitable for the different feeding particle sizes and grades. It is the domestic advanced level, the new highly effective equipment.

This company uses the newest design and a complete set of technology organization produced and strict quality testing to guarantee each specification of spiral concentrator qualified.

We make the serialized with a special kind of grooved spiral concentrator to be selected by colored, ferrous metal mine, coal chemical industry, iron dressing, sulfur factory as well as the scientific research, the design department, the colleges and universities test chamber.

Technical Specification

GANDONG Factory has one group of experienced professionals who specialized in over 20 majors including geology, mining survey , mining. mining machinery, layout for road and transportation in plant area , mineral processing, smelting, civil engineering, water supply and drainage, tailings, industrial design, electricity, automation, communications, investment banking, technical economy, budget estimate, and so on. So far, Well Company has got a dozen of technological achievements in gold, ferrous metal, nonferrous metal and nonmetal. Besides, Well has rich experience for mineral mining and processing, which involves nearly 70 kinds of minerals including gold, silver, copper, lead, zinc, iron, nickel, chrome, titanium, vanadium, tungsten, molybdenum, manganese, arsenic, stibium, mercury, tin, rare metal, silicon sand(quartzite), feldspar, fluorite, apyre, baroselenite, garnet, graphite, diopside, rutile, spodumene, tourmalin, phosphorite, plaster, etc.