Preparing method for titaniferous inorganic flocculant

Abstract

The invention discloses a preparing method for titaniferous inorganic flocculant and relates to the technical field of preparing methods for the titaniferous inorganic flocculant in the technical field of chemistry. Vanadium titano-magnetite serves as a basic material, a sodium or sylvine additive is added in iron ore concentrate obtained through magnetic separation in the reduction smelting process in an electric furnace, and molten iron and titaniferous slag are obtained, wherein vanadium and iron are reduced to enter the molten iron while silicon and aluminum impurities and the sodium or sylvine additive form sodium aluminosilicate capable of dissolved in diluted acid under the high-temperature smelting condition, and the sodium aluminosilicate and titanium and calcium and magnesium impurities are left in the titaniferous slag; then silicon, aluminum and iron in the titaniferous slag are extracted by adopting a hydrometallurgy method on the titaniferous slag and serve as raw materials for preparing the inorganic polymer flocculant. According to the preparing method for the titaniferous inorganic flocculant, the sodium salt additive is added in the smelting process of the iron ore concentrate in the electric furnace, the acidolysis leaching rate of silicon and aluminum in the smelting slag is greatly increased, the raw materials are provided for preparing the inorganic flocculant, and the key technical purpose of impurity reduction of rich titanium of the titaniferous slag is achieved.

Description

technical field [0001] The invention relates to the technical field of preparation methods of inorganic flocculants in the field of chemical technology. Background technique [0002] In recent years, water pollution and water shortages have increasingly become important factors restricting my country's economic development. The state also attaches great importance to the prevention and control of water pollution. The State Council issued the "Water Pollution Prevention and Control Action Plan" on April 16, 2015. The plan clearly states that by 2020, all counties and key towns across the country will have sewage collection and treatment capabilities. The county and city sewage treatment rates reached 85% and 95% respectively. Therefore, in order to reduce and eliminate the harm caused by sewage to human beings and the environment, it is necessary to strengthen the research on sewage purification treatment. In general, water treatment methods are divided into biochemical met...

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Problems solved by technology

[0005] Vanadium-titanium magnetite is an important polymetallic mineral resource in my country. In the current production process, TiO, which accounts for about 50% of titanium resources, is 2 After entering the magnetic separation iron concentrate, it is finally lost in the blast furnace slag and cannot be used. For this reason, people have carried out research on a variety of new processes, among which the non-blast furnace ironmaking process has the most development potential. The iron concentrate can be processed after reduction and smelting. TiO 2 50% ± titanium slag, but the smelting slag still does not reach commercial grade acid-soluble titanium slag TiO 2 The technical and economic index of direct acid hydrolysis to produce titanium dioxide is relatively poor. At present, the effect of titanium-rich impurity removal on smelting slag is not ideal no matter whether it adopts ore dressing physical impurity removal or hydrometallurgical impurity removal.

[0006] However, in the prior art, vanadium-titanium magnetite has not been used as the basic raw material, and the smelting slag obtained by reducing and smelting the iron concentrate obtained by magnetic separation has not appeared as an inorganic flocculant.

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