Jiaozuo Zhongxin Heavy Industrial Machinery Co., Ltd.
Review turnkey mineral processing and gold recovery plant installations engineered by Zhongxin Heavy. Detailed case studies cover gold CIP/CIL cyanidation lines, copper ore flotation circuits, iron ore magnetic separation, and gravity concentration systems—complete with process flowsheets, equipment configurations, and verified mineral recovery rates.
Maximizing Recovery from Complex & Refractory Gold Sulfides
Complete turnkey processing solutions for sulfide gold ores. We integrate heavy-duty ball milling, high-efficiency flotation circuits, and combined gravity or cyanidation systems to achieve up to 96% gold recovery rate while reducing energy consumption and operational costs for mining projects worldwide.
Sulfide gold ore processing remains the most critical route in global gold mining, as primary sulfide deposits represent roughly 70% to 80% of the world's primary gold resources. In these ores, gold is frequently encapsulated within sulfide minerals—such as pyrite, arsenopyrite, and chalcopyrite—often occurring as "invisible gold" (solid solutions or sub-microscopic inclusions). Extracting gold from these refractory ores requires advanced beneficiation methods, including froth flotation, bio-oxidation, or roasting pretreatment.
At Jiaozuo Zhongxin Heavy Industry, we manufacture state-of-the-art sulfide gold ore flotation plants designed for complex ore bodies. By utilizing precise flotation reagent schemes and high-turbulence flotation cells, our systems efficiently upgrade low-grade feed into a high-grade gold concentrate prior to downstream hydrometallurgical treatment.
We offer flexible process flowsheets tailored to your ore's mineralogy:
Direct Flotation: Ideal for recovering gold encapsulated in fine-grained sulfides.
Combined Gravity + Flotation: Captures coarse free gold early in the circuit via centrifugal concentrators before floating fine sulfide minerals.
Flotation + Concentrate Leaching / Cyanidation: Recovers gold-bearing sulfides into a high-grade concentrate, followed by regrinding and intensive cyanidation to minimize chemical consumption.
Plant Capacity:50 – 3,000 TPD (Tons Per Day) / Modular & Scalable Design
Applicable Ore Types:Sulfide Gold Ores, Pyritic Gold, Arsenopyritic Gold & Mixed Sulfides
Gold Recovery Rate:90% – 96% in Final Gold Concentrate
Compatible Flowsheets:Direct Flotation / Gravity + Flotation / Flotation + Leaching (CIL/CIP)
Key Equipment Package:Ball Mill, Pneumatic/Mechanical Flotation Cells, High-Rate Thickener, Chamber Filter Press
| Ore Type | Mineral Characteristics | Processing Difficulty | Recommended Beneficiation Method |
| Gold-Bearing Sulfide Ore (Pyritic / Free-Floating) | Gold is predominantly embedded as fine or micro-fine grains in sulfide minerals like pyrite, arsenopyrite, chalcopyrite, galena, and sphalerite. High natural floatability; effectively captured using conventional collectors (e.g., xanthates) and frothers. | Moderate Difficulty: Gold is mainly associated with sulfides, but high monomer liberation can be achieved via fine grinding (ball milling). | Froth Flotation + Concentrate Cyanidation (CIL / CIP Leaching) |
| Refractory High-Arsenic Sulfide Gold Ore | Gold is sub-microscopically encapsulated within sulfide matrices (especially high-arsenic arsenopyrite) or occurs as lattice-bound invisible gold. High arsenic content. | High Difficulty: Highly refractory. Requires advanced pretreatment to break down sulfide encapsulated structures. | Flotation + Concentrate Pretreatment (Roasting / Bio-oxidation) + Cyanidation |
| Partially Oxidized Gold Sulfide Ore | Contains both oxidized minerals (e.g., limonite) and residual primary sulfides (pyrite/arsenopyrite). Micro-fine gold is coated in hydrophobic sulfides; floating sulfides effectively recover gold. | High Difficulty: Complex mineralogy requiring selective flotation and oxide recovery. | Gold Flotation Concentration (To produce high-grade gold-bearing sulfide concentrate) |
| Gold-Bearing Copper Sulfide Ore | Auriferous copper-bearing sulfide ore with exceptionally high economic value (polymetallic copper-gold deposit). | Moderate Difficulty: Requires differential flotation to balance copper grade and gold recovery. | Gold-Copper Flotation (To produce gold-bearing copper concentrate) |
| Carbonaceous Sulfide Gold Ore | Contains natural carbonaceous matter (graphite, organic carbon) with high floatability that causes severe "preg-robbing" by adsorbing gold-cyanide complexes during downstream leaching. | High Difficulty: Requires complex pre-treatment (roasting or bio-oxidation) to destroy carbon compounds, making direct cyanidation ineffective. | Flotation of Carbonaceous Concentrate + Separate Treatment (e.g., Roasting / CIL with preg-robbing inhibitors) |
Crushing and mineral processing setups that actually handle hard rock, fines, and wet material. See our stationary, mobile, and modular lines for mining and aggregates.
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