Project Background: Brazil has abundant iron ore resources. The goal is to efficiently develop low-grade iron ore to meet the needs of the steel industry.
Goal: Increase the grade of iron ore concentrate to more than 65%, and the comprehensive recovery rate ≥85%, to achieve a win-win situation of environmental protection and economic benefits.
1. Conventional process (applicable to high-grade gold ore)
Ore → coarse crushing (jaw crusher) → medium crushing (cone crusher) → fine crushing → ball milling → flotation/cyanidation → smelting
2. Low-grade gold ore (heap leaching)
Ore → coarse crushing → fine crushing → heap building → spray cyanidation → activated carbon adsorption → electrolytic gold extraction
3. Refractory gold ore (such as arsenic-containing, carbonaceous gold ore)
Ore → crushing → grinding → roasting/biooxidation → cyanidation → smelting
Gold ore is mainly divided into rock gold ore and alluvial gold ore, their physical and chemical properties are different, so the beneficiation methods are also different.
The process of gold ore processing production line covers multiple links from crushing, grinding, and flotation to dehydration and smelting.
Ore type: Sulfide ore (chalcopyrite, bornite)
