The Heap Leaching Project of the Gold Mine in Akmola Region, Kazakhstan

In the field of gold mining, efficient extraction technologies and high - quality chemical reagents are crucial for increasing production and improving economic benefits. Today, we will focus on a gold mine in Akmola Region, Kazakhstan, and deeply explore the remarkable changes brought about after using the high - quality sodium cyanide provided by our company.

I. Challenges of the Gold Mine Project in Akmola Region

The gold mine in Akmola Region belongs to the sericite - altered rock type and low - sulfide gold - bearing quartz vein type. The gold dissemination grain size is extremely fine, unevenly distributed, and has a poor relationship with sulfides. The ore contains a small amount of native gold, pyrite, chalcopyrite, bismuth - tellurium sulfides, as well as galena, sphalerite, etc., and belongs to refractory floating gold ore. In the initial stage of mining, traditional methods were difficult to effectively process such complex ores, resulting in low gold recovery rates, serious resource waste, and difficult improvement of economic benefits.

II. Innovative Process and the Key Role of Sodium Cyanide

After numerous tests, it was determined that the gold heap leaching process is the most reasonable method for treating this ore. In this process, sodium cyanide plays an indispensable role.

The high - quality sodium cyanide we provide has demonstrated excellent performance in the gold leaching process of this gold mine. The gold leaching process has strict and scientific control over the concentration of the sodium cyanide leaching agent: in the initial stage, the concentration of the sodium cyanide leaching agent is controlled at 0.10%, and the initial spraying intensity is 20 - 30L/(TPD); after the middle stage, the concentration is reduced to 0.05% - 0.08%, and in the final stage, it is adjusted to 0.03% - 0.05%. The spraying interval ratio is 1:2. When there are obvious seepage problems in the heap, the spraying intensity and spraying interval ratio will be adjusted in a timely manner. The leached rich liquid is adsorbed throughout the process, and the adsorption intensity is 12 - 20 L/(tpd). When the grade of the rich liquid is lower than 0.2g/m3 or there is no economic benefit, the leaching ends.

After the leaching is completed, in order to ensure environmental compliance, solid calcium hypochlorite is spread on the surface of the heap and then sprayed with water. When the p(CN -) in the reflux liquid is less than 0.5×10. the disinfection meets the standards. The leaching residue can be transported to the slag disposal yard, and the waste liquid is directly discharged.

III. Remarkable Achievements

Throughout the cooperation process, our professional technical team provided all - round and full - process technical support to the gold mine. From the beginning of the project, we delved deep into the mining area. In view of the complex ore characteristics of the gold mine, we assisted the gold mine team in formulating a detailed and accurate heap leaching process plan to ensure that sodium cyanide can exert its best performance under the most suitable conditions.

During the gold leaching process, technicians were stationed on - site for a long time to monitor various process parameters in real - time. According to the changes in key indicators such as the concentration of the sodium cyanide leaching agent, spraying intensity, and spraying interval ratio, professional suggestions were provided in a timely manner and adjustments were made. For example, when seepage problems were found in the heap, technical discussions were quickly organized, and the spraying plan was re - optimized to ensure the smooth progress of the leaching process.

At the same time, we also carried out several rounds of professional training for the gold mine staff. The training content covered the safe use of sodium cyanide, the operation and maintenance of heap leaching equipment, and common problems and solutions in the leaching process. Through a combination of theoretical and practical training methods, the professional skills and operation levels of the gold mine team were effectively improved.

It is precisely under our continuous technical support and services that the gold recovery rate of this gold mine has been successfully increased to 77%. Not only has the gold production increased significantly, but also the production cost has been greatly reduced. These achievements not only demonstrate the excellent performance of our high - quality sodium cyanide but also reflect the strong strength of our professional technical team.

For gold mining enterprises in Kazakhstan and other regions around the world, choosing high - quality sodium cyanide is an important step to enhance competitiveness and achieve sustainable development. As a professional sodium cyanide exporter, our company will continue to uphold the philosophy of quality first and service - oriented, and provide high - quality products and services for the global gold mining industry. If your gold mine is also seeking more efficient and economical extraction solutions, welcome to contact us and jointly open a new chapter in gold mining.