A concentrator in Shanxi commissioned Xinhai to study its quartz sand beneficiation project, and conducted comprehensive condition tests by on-site sampling to develop a reasonable process plan for the customer. Through the test, the technical and economic indicators of the "raw ore magnetic separation-scrubbing process" and the "raw ore magnetic separation-flotation-scrubbing" process were compared, and the project chose to adopt the "raw ore magnetic separation-scrubbing process". This process can obtain quartz concentrate with a yield of 84.03%, SiO2 grade of 99.64%, Al2O3 grade of 0.093%, and Fe2O3 grade of 0.038%. The customer is very satisfied with the result.

As one of the important flotation plant projects undertaken by Xinhai Mining, Xinhai Mining provides customized full-industry chain services for the project, including research and design, complete equipment manufacturing and procurement, commissioning and delivery, and engineering management. Xinhai designed the process flow as follows: raw ore - coarse crushing - fine crushing - primary grinding - coarse flotation - coarse and fine re-grinding - fine flotation - fine sweep flotation, and then after concentration and filtration, bagging, the final fluorite concentrate product is obtained. During the operation of the project, the team of Xinhai Mining stayed at their posts, did the corresponding work well, and overcame various unfavorable conditions. The project has now been successfully put into operation.

This project is a cooperative project of China-Uganda Energy Industrial Park. Xinhai Mining completed the project commissioning work in one go within a limited time. The raw materials of this project are high-phosphorus tailings from the magnetic separation plant (-200 mesh accounts for 50%). The main process flow is: the raw materials are transported to the high-concentration stirring tank for slurry mixing, and the slurry after stirring and mixing is transported to the original ore desludging cyclone for desludging. The ball mill, pump, and grading cyclone form a closed-circuit grinding system. The flotation process is designed as a positive flotation process with one roughing, one sweeping, and two fines. The flotation concentrate is transported to the concentrate dehydration system for dehydration, and the dehydrated product is phosphate concentrate; the flotation tailings are transported to the tailings dehydration system for dehydration, and the dry tailings are transported to the tailings pond by dump trucks for storage; the dehydrated filtrate is returned to production for recycling.

The main minerals of the original ore of this project are graphite grainstone, followed by graphite schist, and its important useful mineral is medium flaky graphite. Xinhai Mining provides EPCM+O services for this project, and the design process is: one stage roughing selection, two stages scavenging selection, ten stages of concentration, two stages of closed-circuit crushing-one stage of closed-circuit grinding classification-flotation process. In order to obtain high-carbon graphite concentrate, the graphite concentrate is wet screened, the -140 mesh concentrate yield is 3.68%, and the fixed carbon content is 95%; the graphite recovery rate of the -140 mesh concentrate is 10.72% and 91.46%. Due to the perfect overall process flow, simple reagent system, and advanced project indicators, the recovery rate of graphite concentrate reaches 92%.