Our Chloride Titanium Dioxide Breaks Through Foreign Technology Blockade

Domestic titanium dioxide chlorination phenomenon "human flourishing" situation. Recently, according to statistics of the titanium dioxide industry, six companies in the country have mastered the chlorination of titanium dioxide technology, and launched the chlorination of titanium white project construction, the end of the Jinzhou titanium industry more than a dozen years of history.

It is worth noting that DuPont, which has been fighting the Panzhihua Iron and Steel titanium project for many years, has been absent from the China Vanadium and Titanium Industry Expo at the end of last month. Regarding its absence, Xu Jianmin, member of the Standing Committee of the Municipal Party Committee of Panzhihua City and the Secretary of the Municipal Party Committee, said, "A lot of resources were used before the meeting, but it did not come."

If domestic companies have succeeded in breaking through the foreign technology blockade against China's chlorination of titanium dioxide, will DuPont continue to fight against steel? At the same time, is there any room for further development in the production of sulfated titanium dioxide?

The chlorination method is to mix rutile or high-titanium slag powder with coke and then high-temperature chlorination to produce refined titanium tetrachloride. After rectification and vanadium removal, high-temperature oxidation, grading, surface treatment, filtration and washing are performed. Dry, crushed titanium dioxide products. The sulfuric acid method is the titanium iron powder and concentrated sulfuric acid acid hydrolysis reaction of the production of titanium sulphate, hydrolyzed to generate metatitanic acid, and then calcined, crushed to obtain titanium dioxide products.

Many companies master chlorination

The “National First Boiling Chlorination Production Technology Seminar and Luohe Xingmao Titanium Industry Chlorination Titanium Dioxide Engineering and Technology Review Conference” will be held soon.

According to the information obtained by the reporter from the organizer of the conference, experts at the conference will visit the site to inspect the production of the 30,000-ton/year chlorination titanium dioxide project of Luohe Xingmao. The design, operating efficiency, installation level, product quality, and consumption of the project are discussed. The survey and assessment of costs, environmental protection and safety protection are conducted to summarize and evaluate the operation level of the project.

According to a report from China Chemical Industry News, the main production facility of the chlorination process titanium dioxide project of Luohe Xingmao began construction in March 2012. It adopts advanced boiling and chlorination gas-phase oxidation and other advanced process technologies. The production process is fully controlled and the degree of automation is high. In August 2013, the production line was completed and put into trial production in September. The pilot production was completed in September 2014, achieving 99 hours of uninterrupted continuous production and operation of the entire process, exceeding the standard of 72 hours of continuous operation of the pilot project of the chemical industry engineering project. The capacity load has reached 100%. The current production system is stable and continuous. The operation time has exceeded 15 days, and the output has reached 5,000 tons, and the quality is stable. The project has entered the normal production stage.

Yunnan Xinli Nonferrous Metals Co., Ltd. (hereinafter referred to as “Yunnan Xinli”) also stated on November 29 that the chlorination process titanium dioxide has solved the problem of low production capacity of domestic chlorinated furnaces, with a daily production capacity of 500 tons, which has overcome the size of the oxidation system. Distribution, rutile conversion, and other core issues of the oxidation system. At present, the project is in the test phase and has completed a major node of 72 hours of continuous operation in continuous operation. The maximum load is 75%, and 70% of the load is expected to operate stably for a long time.

At the same time, Xinli titanium dioxide also revealed that the new chlorotitanium dioxide project has started a new coastal chlorination process titanium white project in Lianyungang area, and has completed feasibility studies, program demonstration, preliminary design work, etc.: from 2014 to 2017, in Lianyungang New Add two 80,000 tons/year titanium chloride production lines; from 2018 to 2020, add two 80,000 tons/year titanium chloride production lines. By that time, the total capacity of chlorination titanium dioxide will reach 320,000 tons.

In an industry internal conference, the leader of Luohe Xingmao stated that the chlorination titanium dioxide project has been successful and he hopes to have more technical exchanges with his peers. After expressing this meaning, he also emphasized that his words are sincere and not polite.

The reporter found that in the pioneer team of the chlorination process in China, the phenomenon of light competition and heavy communication is very obvious. However, at an industry conference, the executives of the two titanium dioxide companies mentioned above are frankly communicating the titanium dioxide technology of chlorination. There is no worry that the competitors will become stronger.

Cai Xubo, the general manager of the e-commerce trading platform "Qianke Yuntai" who has been involved in the titanium dioxide industry for many years, said that the production capacity of titanium dioxide from the current titanium dioxide production capacity in 2014 is about 730,000 tons/year. "Ultra-chlorination titanium dioxide" is no longer just a smoke bomb that large companies use to intimidate their domestic counterparts. There are already real funds to invest in.

Sulfuric acid dilemma

At the meeting of the chairman of the China Titanium Dioxide Association in 2014, a member of the board of directors heard that six companies were building a chlorination process titanium dioxide production line and said, “If you engage in chlorination of titanium dioxide, you can't tell the news if you succeed. As well as plans to expand production capacity, we will no longer invest in sulfur dioxide titanium dioxide production capacity."

It is still difficult to determine whether the chlorination titanium dioxide project of other domestic companies can distract DuPont’s attention. However, the Panzhihua Iron and Steel Company’s senior executive said that the “China Vanadium and Titanium Industry Expo” was held frequently and said that everything was ready for the east wind. “Panzang Steel has taken the lead in breaking the key production technology of chlorination titanium dioxide in China.” “Pangang has the ability to build 100,000 tons of chlorination titanium dioxide production line.”

“The domestic demand for titanium dioxide is expected to reach four million tons in 2020. Sulfuric acid titanium dioxide production in the country has a large proportion of production capacity. There are also production lines for titanium dioxide chloride, but all raw materials are imported.” Academician of the Chinese Academy of Engineering Gan Yong stated that if It is of little significance that the raw materials for the chlorination titanium dioxide production line are imported.

Technical experts believe that although the domestic technology of high-temperature carbonization and low-temperature chlorination technology to produce titanium slag, to provide raw materials for the chlorination of titanium dioxide, but the cost is not competitive.

Sun Peng, general manager of Titanium Dioxide Enterprise, Shandong Dongjia Group, stated that the chlorination process has achieved technological breakthroughs in the short term, but the progress and effect of the construction of completed units under construction by other manufacturers remains to be seen.

Yunnan Xinli also stated that the titanium dioxide production line in the chlorination process is still far behind DuPont. The domestic chlorination titanium dioxide production line is relatively small and the cost is relatively high. Only Panzhihua’s 100,000-ton/year chlorination production line is planned.

Gan Yong highly praised the sulfuric acid titanium dioxide process of a local company in Panzhihua. The company used high-quality acid-soluble titanium-rich materials as materials to solve environmental problems. In addition, Panzhihua Xinzhong titanium is leached with hydrochloric acid under pressure, and the mother liquor is divided and circulated to produce artificial rutile and a novel acid-soluble titanium-rich material.

A number of titanium dioxide companies believe that the original competent authorities believe that the solid waste treatment of sulfuric acid titanium dioxide has a relatively large environmental pollution. In fact, this solid waste is much smaller than that of titanium chloride. In the past few years, the sulfuric acid titanium dioxide project was a restricted development category. It has been loosened in recent years. As long as it meets the requirements of environmental protection, energy consumption and water consumption are up to standard, and no longer limited.

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