Hard carbon anode material is the most preferred materials for commercialization of sodium-ion battery
Cyanide is the main gold-dissolving agent in heap leaching. If the concentration is too low, gold dissolves slowly and extraction drops. If it is too high, reagent consumption rises and operating costs increase, while benefits may be limited. The best concentration is usually a controlled balance between dissolution rate and economics.
Heap leaching solutions must stay strongly alkaline, typically using lime or caustic soda. A high pH prevents cyanide losses as toxic HCN gas and helps maintain safe, efficient leaching. If pH falls, cyanide decomposes faster and gold recovery can decline sharply.
Gold dissolution needs both cyanide and oxygen. Low oxygen levels slow the leaching reaction, especially in large heaps where solution flow may be uneven. Adequate aeration or natural oxygen supply in the solution improves extraction efficiency.
Some dissolved ions and minerals consume cyanide or interfere with gold dissolution. Copper, zinc, iron sulfides, and certain organic compounds can increase reagent consumption and reduce gold recovery. The more reactive the ore, the more carefully the solution chemistry must be managed.
In some cases, additives are used to improve leaching performance or control impurities. These can help stabilize the solution chemistry, but they must be selected carefully. Poorly chosen additives may compete with gold for cyanide and reduce overall extraction.
High chloride or salt content can change how gold and other metals behave in solution. In some ores, this may help or hinder extraction depending on mineralogy. Excess salts can also affect permeability, solution flow, and downstream recovery.
Warmer solutions generally speed up gold dissolution. However, heap leaching is usually influenced more by ambient conditions than by direct heating. Extremely high temperatures may increase evaporation and reagent loss, so the effect must be managed economically.
Gold heap leaching works best when the leaching solution is chemically balanced: enough cyanide, stable high pH, sufficient oxygen, and minimal interfering impurities. Because ore types vary widely, solution composition often needs to be adjusted through testing and monitoring rather than using a fixed formula.
Leaching solution composition directly controls gold dissolution rate, reagent consumption, and final extraction. By optimizing cyanide level, pH, oxygen availability, and impurity control, operators can significantly improve heap leaching performance and gold recovery.
A: The right process depends on your ore’s mineralogy, grade, particle size, and liberation characteristics — not on guesswork. The reliable way is to run laboratory and pilot tests first. These tests define whether flotation, gravity separation, magnetic separation, or leaching (or a combination) will deliver the best recovery and grade. We start every project with ore characterization and bench-scale tests, then scale up to pilot validation before committing to plant design — a testing-first approach that avoids costly process mistakes later.
A: Reagent selection depends on the mineral’s surface chemistry and the ore’s gangue composition. Collectors, frothers, depressants, and modifiers are chosen — and their dosages fine-tuned — through laboratory flotation tests on your actual ore sample, not from generic recipes. Over- or under-dosing both hurt recovery. Our metallurgical lab tests reagents on your ore to lock in the right combination and dosage before plant-scale operation, then re-optimizes during commissioning.
A: Heap leaching suits low-grade, high-tonnage ores — crushed ore is stacked and irrigated with a leaching solution, giving low capital and operating cost but slower, weather-dependent recovery. CIL (carbon-in-leach) and CIP (carbon-in-pulp) both use cyanide solution and activated carbon, but differ in where adsorption happens: CIL adds carbon during leaching, which suits clayey or high-fines ores; CIP adds carbon after leaching, which suits clean, free-filtering pulps. The choice comes down to ore type, grade, and throughput — we evaluate all three against your ore to recommend the most economical route.
A: Start by diagnosing where the loss occurs — usually in grinding, classification, or the separation stage itself. Common levers include: optimizing grind size for better liberation, upgrading to more efficient separation equipment (flotation cells, magnetic separators, spirals), automating control for steadier operation, and re-running metallurgical tests when the ore type changes. A structured audit plus targeted equipment or process upgrades typically recovers 2–5% more metal. We provide exactly this — process audits, equipment upgrades, and full EPC retrofits — to lift both recovery and grade.
Hard carbon anode material is the most preferred materials for commercialization of sodium-ion battery
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Raw Ore: Primary Sulfide Ore (Chalcopyrite-Bornite) Cu Grade: 0.72% Concentrate Grade: 28.3%
Raw Material: Sulfide Flotation Copper Tailings Metal Concentrate: Copper: 0.8%，Gold: 0.3 g/t，Silver: 5 g/t，Iron: 25%
Raw Ore: Mixed Type Gold Ore (Oxide & Sulfide) Gold Grade: 2.8 g/t Gold Recovery Rate: 92% (Post-Optimization)
Raw Ore: Sulfide Copper Ore (with minor pyrite content) Copper Grade: 1.2% Concentrate Grade 25% Cu
Raw Material: Quartzite Rock (SiO₂: 97.8%) Photovoltaic Grade: SiO₂≥99.99%, Fe₂O₃≤10ppm
Raw Ore: Mixed Oxide-Sulfide Copper Ore (Chalcocite/Malachite) Copper Grade: 1.2% | Silver: 15g/t
Raw Ore: Copper-Gold Ore Copper Grade: 1.2% Gold Grade: 1.5 g/t Recovery Rate: Copper 89%, Gold 88%
Raw Material: Polymetallic Ore Containing Galena (PbS) and Fluorite (CaF₂) Lead Grade: 3.5% Fluorite Grade: 35%
Prominer can provide SF series self-priming flotation machine and XCF/KYF series pneumatic flotation cell
Our engineer team can design and manufacture the mobile type radial stacker, loader
Prominer provides various types of furnaces for primary and secondary baking of carbon
We can provide different type graphitization furnace for changing carbon material
Prominer can provide all kinds of linear screen for mineral grading, material sizing, dewatering
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2500TPD Lithium Ore Flotation in Sichuan
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