Hainan Changjiang Iron Tailings Comprehensive Utilization EPC Project
Project Overview
Located in Changjiang County, Hainan Province, this national key project processes 10,000 tons of iron tailings daily with original ore grade of 10-20 degrees. Zexin Mining Equipment provided comprehensive services from design to commissioning. The process includes primary crushing, secondary crushing, screening, and jigging, achieving efficient recovery of low-grade tailings.
Challenges
The main challenges included difficulty in processing low-grade tailings with poor recovery rates using traditional methods. The limited site space required a highly optimized process layout. Strict local environmental requirements necessitated a balance between production efficiency and environmental protection.
Solutions
We implemented an innovative process route with an optimized crushing and screening system to improve material classification efficiency and multi-stage jigging process to increase iron mineral recovery. Our compact plant layout design enabled short-path material transfer. We installed high-efficiency dust removal and water treatment systems to meet environmental requirements, along with an intelligent control system for full-process automation.
Results
The project achieved its expected goals with tailings comprehensive utilization rate increased by 25%. Annual iron concentrate production reached approximately 400,000 tons with grade improved to over 60%, meeting steel production requirements. Water recycling rate reached 95% with dust emissions below national standards. The project created significant economic benefits for the owner while reducing environmental pressure from tailings storage.
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