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How did the titanium in your hand come from? (1) Titanium ore beneficiation: Introduction to three major titanium ore beneficiation processes

Titanium is one of the important metals used in industrial production, national defense, and daily life, and its raw material production has also received widespread attention and importance. Among them, ilmenite is the main source of titanium resources, and strengthening its separation and recovery is one of the key measures to improve the production capacity of titanium raw materials. This article will introduce three separation processes for ilmenite, namely ilmenite reselection process, strong magnetic reselection process, and strong magnetic flotation process.
1、 Titanium iron ore reselection process
The re-election process mainly utilizes the difference in specific gravity between ore components. The equipment used in the ilmenite reselection process mainly includes spiral chutes and shaking tables. Due to the complex composition of titanium iron ore, which contains easily selectable minerals such as kaolinite and quartz, as well as difficult to select vein minerals such as trihydrate alumina, the use of gravity separation technology to separate titanium iron ore requires the combination of spiral chutes and shaking tables.
When re selecting, a spiral chute coarse selection and two fine selections are first used to exclude vein minerals with significant density differences from ilmenite. The intermediate ore produced by spiral chute reselection can be reselected to improve resource utilization efficiency. Then use a shaker to select and improve the grade of the concentrate. Due to the presence of minerals such as hematite and magnetite in ilmenite, weak magnetic separation technology can be used to remove iron, which can further improve the concentrate grade.
2、 Titanium iron ore strong magnetic reselection process
Due to the weak magnetism of ilmenite itself, and the non-magnetic or weak magnetism of vein minerals such as kaolin and quartz in the ore, ilmenite can be separated by strong magnetic separation technology. Specific process: To avoid excessive grinding of the ore, the titanium iron raw ore is first screened by a screening machine and then enters a ball mill for grinding. The ground product enters a strong magnetic separator to complete a rough selection. Because there is a certain amount of magnetite in the raw ore, during the strong magnetic rough selection, these ores will enter the titanium concentrate, affecting the concentrate grade of the final titanium concentrate.
To solve this problem, it is necessary to carry out weak magnetic iron removal operation on the strong magnetic concentrate. The grade of the concentrate after iron removal needs to be further improved to meet the production indicators. The re-election process can enrich titanium ore well, and generally uses a shaking table. After re-election, four types of products can be obtained, namely concentrate, secondary concentrate, intermediate ore, and tailings. In actual production, in order to make rational use of resources, it is necessary to conduct further grinding and sorting operations on secondary and intermediate ores, which can also improve the recovery rate of concentrates.
3、 Titanium iron ore strong magnetic flotation process
Due to the high mud content in the ilmenite ore, the separation effect of full flotation is not very ideal. Therefore, using flotation technology to separate ilmenite ore will be combined with other processes. After strong magnetic separation, a large amount of tailings are discarded from ilmenite, and flotation technology can effectively recover ilmenite from strong magnetic concentrate. The use of flotation technology after strong magnetic separation can further improve the recovery rate of ilmenite concentrate. During flotation, collectors such as oleic acid and salicylic hydroxamic acid, lead acetate, inhibitor water glass, and carboxymethyl cellulose can be added to the slurry. When oleic acid and salicylic hydroxamic acid are mixed in a ratio of 3:1, they have a good collection effect. Lead ions in lead acetate can activate ilmenite, while water glass and carboxymethyl cellulose inhibit the flotation of gangue minerals, as the pH value in the slurry affects the grade of the recovered concentrate. Sulfuric acid and sodium hydroxide can be added for adjustment. To protect the equipment from corrosion, flotation is generally carried out under neutral conditions.
In addition, the dosage of collectors and inhibitors can affect the flotation effect. It is necessary to conduct mineral processing tests and analysis before sorting to avoid material waste and reagent loss.
After beneficiation, the titanium iron ore, known as "titanium concentrate", can enter the next production stage: preparing titanium tetrachloride.
At present, titanium metal is on its way to your hands, just taking the first step of the Long March~

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