With the changes in market conditions and the continued development of power in other regions, the pattern of domestically dominant 4A zeolite industry in Shandong is quietly changing. Recently, Shanxi Okeya Chemical has invested nearly 400 million yuan in succession and built an annual output of 100,000 tons of 4A zeolite project; Yuci High-tech Co., Ltd. has an annual output of 100,000 tons/year of 4A Zeolite Phase II technological transformation and expansion project. The second phase of the 2.4 million tons/year 4A zeolite and aluminum hydroxide production project was officially started in Xiaoyi City, Shanxi Province, and is expected to be put into operation in June next year; Yuncheng Aoxin Nano New Technology Co., Ltd. will produce 600,000 tons/year annually. The news that the 4A Zeolite project is undergoing preliminary feasibility studies with several coal companies in Shanxi has gradually become clear. The eyes of the industry are increasingly focused on Shanxi.

Phosphorus releases market gap

4A zeolite is the best substitute for phosphorus-based detergents. Since the 1980s, various countries in the world have been racing to use 4A zeolite to replace the sodium tripolyphosphate, which is a phosphorus-containing auxiliary in detergents. With the increasingly stringent emission limits of environmental laws in various countries, 4A zeolites at home and abroad have already been in short supply. In May 2007, large-scale "blue algae" incidents occurred in the waters of Taihu Lake, Chaohu Lake, and Dianchi Lake in China, which caused the State Council's attention. All provinces and regions have successively introduced the policy of banned phosphorus. On June 1, 2008, the amended "Law of the People's Republic of China on the Prevention and Control of Water Pollution" was formally implemented, and a new round of phosphorus-repellent action resumed. With the implementation of the national ban on phosphorus policy and the strengthening of environmental protection awareness in recent years, the consumption of non-phosphorus detergent powder has increased year by year, which has led to the market demand for domestic 4A zeolite.

China's current detergent production and sales volume is about 8 million tons, and the proportion of non-phosphorus detergent has not reached half. If we calculate the annual output of 4 million tons of non-phosphorus detergent powder and add 25% to 30% of 4A zeolite per ton, the demand for 4A zeolite in China will be about 1 million tons/year, while the output of last year will be less than 500,000 tons. The gap is very large. As the demand for detergents increases at a rate of 7% year-on-year, the demand for non-phosphorus additives will increase year by year.

Strong technical and economic competitiveness

The numerous 4A zeolite projects recently launched in Shanxi Province, in addition to the advantages of the national environmental protection policy, have also gathered product resources and technological advantages, which has attracted more and more attention in the industry.

The main synthesis methods of zeolite 4A are classified into four methods: water glass method (hot water method), bentonite method (activated clay method), kaolin method, and natural zeolite method. These four methods have their own advantages and disadvantages. In contrast, the kaolin method has the lowest cost, but it has a higher quality requirement for kaolin. Activation treatment is the key technology, otherwise it cannot guarantee product quality. At the same time, its production cost is high, and a large amount of waste slag is generated to form secondary pollution. An important reason why China has not promoted new types of alternative washing products on a large scale is that the cost of washing products using 4A zeolite additives is too high. The selling price has been higher than that of traditional phosphorus-containing detergents for many years, and promotion is difficult.

After many years of hard work, Shanxi Aoxin Nanotechnology Co., Ltd. has developed a series of first-generation and second-generation phosphor additives, and developed the third generation of zeolite LN-4A as a raw material for the production of phosphate additives. The technology has passed the appraisal of scientific and technological achievements in Shanxi Province, and the expert committee has determined that this project has reached the domestic leading level in the same type of research and has now obtained national invention patents. The use of coal gangue produced LN-4A zeolite can consume a large amount of gangue, not only the cost is lower than other 4A zeolite production methods, but also lower than the traditional phosphate additives, product performance is better than other similar products. From a technical and economic point of view, the use of coal gangue for the production of 4A zeolite has low investment, high technological content, relatively short process flow, short construction period, comprehensive utilization of resources, relatively low product cost, and strong comparison with other synthetic methods. Competitiveness.

Turn waste into treasure raw material enrichment

Coal gangue belongs to raw coal waste and has become a major public hazard in China's coal industry. Relevant information shows that at present, the coal gangue stockpiles in China have reached more than 3 billion tons, and the coal deposits in the hinterland of Guangshan coalfield have a total of 1 billion tons, and they are still increasing at an annual rate of 20 million to 30 million tons. These abandoned coal gangue not only occupy land resources, but also easily produce sulphides in the event of rain, causing acid rain to pollute the environment. At present, the use of coal gangue in China is mostly concentrated in building materials such as bricks and cement, which have low utilization rate and poor efficiency, and also cause secondary pollution of fly ash. The technology uses coal gangue as raw material and 100% consumes coal gangue. It is truly a new “source of disasters” for new resources, so that the added value of coal gangue exceeds the value of coal itself and truly extends the coal industry chain.

It can be seen that the huge amount of coal gangue accumulated in Shanxi and the 4A zeolite dual environmental protection project technology with independent intellectual property rights can fully support a substitute phosphor additive industry and will provide domestic and international 4A zeolites with Shanxi characteristics and high quality and suitable price. . If Shanxi can form an annual production capacity of 500,000 tons, it will become an important 4A zeolite base in China.

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