Eco-friendly gold dressing agent have been used in one gold mine in Indonesia. As the largest country in ASEAN, Indonesia covers a land area of 1.919 million square kilometers and a marine area of 3.16 million square kilometers, with rich mineral resources. Metal ores mainly include bauxite, nickel ore, iron ore, copper, tin, gold, silver, etc. Non-metallic minerals mainly include coal, limestone and granite. Zinc, mercury, manganese, lead, white clay, andesite, quartz sand, feldspar, dolomite, kaolin, bentonite, zeolite, phosphate, gypsum, etc. also have certain reserves.

However, due to Indonesia’s backward geological exploration technology, weak statistical work, and poor ability to develop and utilize resources, the government has a very incomplete understanding of the country’s resource reserves. Mineral resources have been mainly developed and utilized by foreign companies for a long time.

According to the statistics of the Indonesian Ministry of Energy and Mines, its gold reserves are about 1.91 million tons and the proven reserves are 3,200 tons, mainly distributed in Sumatra, Sulawesi, Kalimantan and Papua. In 2004, the output was 193 tons and the export of gold ingots was 790 kg. The mining of gold has attracted many overseas businessmen and investors. In Indonesia, gold mine types are generally classified into alluvial gold ore and oxidized ore, and because of small investment and quick effect, the heap leaching process is widely used in oxidized ore. Due to reasons such as procurement, information sources, construction technology, etc., most mine owners will use sodium cyanide to separate gold in the early days.

However, sodium cyanide has many problems in Indonesia. First, the purchase price is high. The market price of one-ton sodium cyanide is about thirty thousand to fifty thousand Yuan. Second, sodium cyanide is highly toxic. Inhalation, oral administration and percutaneous absorption can cause acute poisoning. Third, sodium cyanide is strictly controlled managed by the Indonesian government, from marketing, storage, transportation and use. These issues are very clear to overseas investors, but a lack of effective solutions to solve or alternate cyanide is long-standing.

In fact, China has already developed a number of eco-friendly gold dressing agent widely used in various gold extraction processes.
Take ExAurum eco-friendly gold dressing agent, developed and produced by YANTAI ExAurum MINERAL PROCESSING REAGENTS CO., LTD.. as an example. ExAurum eco-friendly gold dressing agent can completely replace sodium cyanide without affecting the actual performance. Being sold and used in more than 9 countries and regions around the world, it has been well received by a wide range of customers. Once launched, ExAurum eco-friendly gold dressing agent quickly occupied the market share of Indonesian eco-friendly gold dressing agent. With six major advantages, ExAurum eco-friendly gold dressing agent has completely activated the brand influence in the Indonesian gold processing industry.

First, eco-friendly gold dressing, green products (tested by authoritative departments, products belong to ordinary goods);

Second, high recovery rate (suitable for heap leaching, pool leaching, stirring leaching, etc.);

Third, great stability (add effective stabilizers to reduce the interference of harmful substances such as sulfur and arsenic);

Fourth, wide usage (applied to gold oxide ore, primary ore, sulfuric acid slag, gold fine powder, anode mud, etc.);

Fifth, convenient usage (pH 10-12, the dosage can be completely in accordance with the cyanidation method);

Sixth, reasonable price (the local sales price in Indonesia is only 60% of sodium cyanide, which greatly reduces the cost of investors.)

In 2012, Yantai YANTAI ExAurum MINERAL PROCESSING REAGENTS CO., LTD.. undertook a calcium carbonate type gold mine project in Indonesia and made a test of it. Experimental research has shown that the best leaching conditions of ExAurum eco-friendly gold dressing agent are 90% grinding fineness of 0.074mm, pulp concentration of 40%, lime dosage of 3kg/t, and alkali pretreatment time of 2 hours, ExAurum eco-friendly gold dressing agent’s dosage is 600 g/t, leaching time is 24h. Under the conditions above, the leaching rate of gold reached 96.40%. In terms of bismuth carbonate gold ore, the leaching rate of ExAurum eco-friendly gold dressing agent is increased by 1.4% and the reagent dosage is reduced by 200 g / t compared with sodium cyanide while the rinse time is reduced by more than 12 hours.

Regarding to the use of ExAurum eco-friendly gold dressing agent, professional technical experts are required to conduct tests in the early stage of mining, because the effect of gold extraction reagents vary from different ores and mining areas.
It’s the previous tests that determine how much dosage needed or whether additional chemical materials should be added . Yantai YANTAI ExAurum MINERAL PROCESSING REAGENTS CO., LTD.. welcomes your consultation.