As one of the countries along with One Belt and One road, Malaysia is rich in tin, iron, gold, tungsten and other mine resources. Among these resources, the reserve of tin is at the second of the world. There is not enough mine equipment in Malaysia for current mineral processing demand, although with rich mine resources. Therefore, Malaysia is highly depending on import mine equipment and the mineral processing market is highly potential. China became the best choice of import mine equipment source for Malaysia depending on advantage geography position mature mine industry experience.
At the same time, CNMC Goldmine Holdings Limited (CNMC), as the top mine company in Malaysia, is looking for a strategy cooperation partner to provide professional mine technology consultant service and high-quality mineral processing equipment for them, depending on the experience and knowledge of mining producers, as well as the rich market resources and mine resources accumulated over the years. They need a partner who can help them extending the market of Malaysia mine industry.
The natural ore of this project includes pyrite, quartz, calcite, mica, etc. The raw ore has 4.70g/t gold, 4.63g/t silver, 20.10% iron, and 20.55% sulphur in it. Gold is available for recovery of valuable elements.
Grinding and classification – cyanidation and leaching – tailings dry stacking - sewage treatment
Wet energy-saving grid ball mill, wet energy-saving overflow ball mill, updated high-efficiency thickener, double-impeller leaching agitation tank, XPA high-lifting wear-resistance rubber slurry pump, filter press, XPA wear-resistance rubber slurry pump,etc.
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The ore characteristic of this project is simple. After mineral processing experiment the process flow was determined as raw ore grinding to 85% -200 mesh, lime as protective alkali, and add sodium cyanide agitating and leaching. Under the consider that pulp concentration is 40%, lime is 7kg/t, and sodium cyanide is 4kg/t, leaching for 24 hours, the final leaching rate of gold is 93.40%.
Grinding stage uses two-block close circuit grinding and classification, grinding production flows to thickener after screening by dust screen. The underflow is pumped to leaching operation. Through leaching, absorption, carbon lifting, get gold carbon product. The gold carbon products are transported and dealt in gold desorption plant.
The design and research service of Malaysia CNMC gold processing plant project was responsible by the professional project group from Xinhai Mine Design and Research Institute. The professional project group finished the project experiment and design task in limited time, and defined the process flow and process index according to the ore samples from clients.
Equipment manufacturing and mine design were at the same time. Xinhai Mining manufactured and purchased relative equipment to short the engineering period and reduce the cost of project.
The installation and debugging staffs from first line of mine production participated in and managed the installation and commissioning of project equipment in the whole process, quickly solved the routine problems in the field civil engineering and installation work, and adjusted the construction scheme in real time. Xinhai Mining finished the installation and commission of CNMC project in high quality during limited time.
To ensure the successful operation and to reach predicted recovery rate as soon as possible, the technics of Xinhai Mining trained and instructed the workers in processing plant. So that the workers could be familiar with the operation of processing plant as soon as possible.
This is the first project under the cooperation between Xinhai Mining and CNMC. According to processing experiment through the sample ore from clients, the process flow and index was confirmed after the comparing gravity separation and all-sliming cyanidation technology.
During the construction design, the relevant aboveground part of the bunker, platform, design foundation, pool design was designed into steel structure as far as possible, so that in the mine site was very flexible assembly, not only reduced the civil work load and construction time, and reduced investment, but also easy to disassemble and move.
Since May 2017, when Xinhai Mining accepted Malaysia CNMC gold project, it put into production in only six months. The origin capacity is 600t/d, but the real capacity is up to 700t/d. The predicted gold recovery rate is 93%, while the real recovery rate is up to 95%, which received a good profit for this project.
Malaysia CNMC 700t/d gold project has successfully reached the standard and put into production in a short period of time, which not only fully reflects the excellent mineral processing technology strength and the overall service advantages of Xinhai technology and mineral processing EPC+M+O service, but also wins further recognition for Xinhai Mining. After the project was successfully put into production, Xinhai Mining and CNMC became stategy partners and once again joined hands with Malaysia 500tpd lead-zinc project, leading the development of dong mineral processing industry in Southeast Asia to a new peak. With the "One Belt And One Road" initiative, Xinhai Mining has successfully served many countries along the line, mineral processing EPC services all over the world, in the future, Xinhai Mining will also strive to create customized mineral processing EPC+M+O service for each customer.
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