Titanium sulfate: Build a cycle chain.

China Paint Network
News: traditional sulfuric acid method
tumium dioxide
process of the biggest drawback is the "three waste" emissions, high treatment costs. Since the "12th Five-Year", the domestic titanium dioxide industry in the "three waste" treatment and comprehensive utilization of a number of breakthroughs, the emergence of a variety of co-production method clean production mode. During the "13th Five-Year Plan" period, titanium dioxide by sulphuric acid method to build sulfur-titanium, sulfur-phosphorus-titanium, sulfur-iron-titanium, sulfur-ammonium-titanium, titanium-sulfur-iron and other circular economy industry chain, to achieve clean production.
For the characteristics of China's titanium resources, the current situation of the titanium dioxide industry and the difficulty of developing the introduction of chlorinated titanium dioxide technology, the future period of time, titanium dioxide production will be mainly sulfuric acid. How to effectively use the waste by sulphuric acid method to guide and standardize enterprises to take the path of circular economic development, the state and industry organizations are actively working hard.
At present, China's sulfuric acid titanium dioxide enterprises from the past to sulfuric acid method of titanium-type titanium dioxide-based, into gold-redstone titanium white powder-based, gold-redstone titanium white powder production capacity of more than 70%, and this proportion is still rising, the product is in the middle and low grade to differentiation, fine high-end grade and replace the import of high-end titanium white powder.
in the commercialization of waste by-products, the most pressure of titanium dioxide enterprises by sulfate method is the use of sludge (red gypsum) produced after the mesotheliation of waste acid in wastewater. Guangdong Huiyun Titanium Company in accordance with the surrounding environment, targeted to create the industry's first waste sub-commoditized clean production and recycling economy industry chain, not only to achieve zero emissions of waste by-products internal circulation, but also achieved considerable economic and social benefits.
"13th Five-Year Plan" period, titanium dioxide industry should focus on the clean production of sulfuric acid, vigorously implement the strategy of circular economic development, resources to eat dry and squeeze, reduce consumption, take the road of environment-friendly development, especially to do a good job in three areas:
vigorously promote energy conservation and consumption reduction. Continuously improve the level of titanium production equipment, promote advanced water-saving equipment and appliances, strengthen the consumption management of titanium dioxide raw materials, the implementation of product ecological design and the use of renewable materials;
to enhance the integrated use of resources and maximize the use of waste generated in production and consumption. Improve the recovery rate and comprehensive recovery rate of titanium concentrate resources, select the process of a single variety of ore, strengthen the acidification process and deposition on the basis of experiments, improve the utilization rate of titanium in the mine;
to implement cleaner production and reduce the generation and emission of pollutants from sources of production and services. Enterprises through the implementation of clean production technology transformation, improve the level of titanium production technology, while using good quality high-titanium slag production, to achieve the end of the treatment to pollution prevention.
treatment of acidic wastewater is an important measure for titanium dioxide enterprises to fully implement the new environmental protection law and the national "Water Ten" policy. At present, the industry generally used lime acid alkali in the treatment of wastewater can meet the standard discharge, but produce a large number of gypsum. Acid wastewater treatment technology is expected to change this situation.
, it is understood that the first acid wastewater treatment project has begun to be implemented, can be completed in 2016. Acid wastewater through comprehensive treatment, waste water, waste acid, ferrous sulfate and other resources can be maximized recycling, so that the production of titanium sulfate to achieve zero emissions and no discharge; With the project's standard delivery, it can be foreseen that the "13th Five-Year Plan" period acid wastewater treatment will be in the national sulfuric acid method titanium dioxide enterprises to be fully popularized and applied.
In the upcoming 13th Five-Year Project, I hope that the state will give strong support to enterprises that have achieved clean production and circular economy from a policy-oriented and financial level, so that they have a more relaxed development environment and promote the healthy development of the titanium dioxide industry with Chinese characteristics.