Titanium iron sand is an important titanium metal raw material, widely used in aerospace, shipbuilding, chemical, electronics, medical and other fields. The coastal area is one of the important titanium iron sand production areas in China, but due to low ore grade and outdated technology, the mining and processing of coastal titanium iron sand has always faced problems such as low grade, high energy consumption, and serious pollution. Therefore, studying the process of improving the grade of coastal titanium iron sand is of great significance for improving the mining and processing efficiency of titanium iron sand, reducing energy consumption and pollution.
1、 The Necessity of Improving the Grade of Binhai Titanium Iron Sand
Ilmenite sands in coastal areas are mainly distributed in coastal dunes, mudflat and seabed placers, with ore grades generally below 30%. The mining and processing of low-grade ores will bring many problems, such as:
1. High energy consumption. The impurity content in low-grade ore is high, requiring multiple grinding, flotation and other processes, resulting in high energy consumption.
2. Severe pollution. Low grade ore contains a large amount of impurities, and the processing process generates a large amount of wastewater, exhaust gas, and solid waste, causing pollution to the environment.
3. Resource waste. Low grade ore contains a large amount of useful minerals, but due to process limitations, it is difficult to extract, resulting in resource waste.
Therefore, studying the process of improving the grade of coastal titanium iron sand is of great significance for improving the comprehensive utilization rate of ore, reducing energy consumption and pollution.
2、 Technology roadmap of Seaside Titaniferous Sand Grade Improvement
The Technology roadmap for improving the grade of seaside titanium ore mainly includes the following aspects:
1. Mineral sorting. Using physical or chemical methods to separate impurities from the ore and improve its grade.
2. Extraction by leaching. Using chemical leaching method to extract useful components from the ore and improve its grade.
3. Magnetic separation. Utilizing magnetic differences to separate useful components and impurities from the ore and improve its grade.
4. Bioleaching. Utilizing the metabolic activity of microorganisms to extract useful components from ores and improve their grade.
The above Technology roadmap can be used alone or in combination, depending on the ore properties and process requirements.
III. Operation Steps for Improving the Grade of Binhai Titanium Iron Sand
1. Mineral sorting. Screen and wash the ore to separate impurities from it.
2. Extraction by leaching. The sorted ore is subjected to acid leaching, alkali leaching, and other treatments to extract useful components from the ore.
3. Magnetic separation. Perform magnetic separation on the extracted ore after leaching to separate the useful components and impurities from the ore.
4. Bioleaching. The ore separated by magnetic separation is subject to microbial leaching to extract the useful components from the ore.
The above operation steps can be adjusted and combined according to specific process requirements.
4、 The Application Prospects of Improving the Grade of Binhai Titanium Iron Sand
The application prospects for improving the grade of Binhai titanium iron sand are very broad, mainly reflected in the following aspects:
1. Improve the comprehensive utilization rate of titanium iron sand. The improvement of grade can fully utilize the useful components in the ore, thereby improving the comprehensive utilization rate of titanium iron sand.
2. Reduce energy consumption and pollution. Improving grade can reduce energy consumption and waste emissions during the processing process, thereby reducing pollution and environmental burden.
3. Promote local economic development. Improving grade can improve the efficiency of titanium iron sand mining and processing, increase employment opportunities, and promote local economic development.
In summary, the research on the process of improving the grade of Binhai titanium iron sand has important significance and application prospects. In future research, we need to further explore new Technology roadmap, improve the efficiency and reliability of grade upgrading, and make greater contributions to the development of China's ferrotitanium industry.