In June this year, the 13th five-year development plan for the cement industry (hereinafter referred to as the plan) formulated by the China cement association was released. "Planning" according to "building materials industry" the 13th five-year "development guidance" proposed to eliminate composite 32.5 cement, encourage the production and use of 42.5 and above grade cement, pure Portland cement. ...

Starting from 2015, the supply-side structural reform, which focuses on reducing production capacity, inventory, leverage, cost and weak links, has been set by the central economic work conference and kicked off in all walks of life across the country. After years of efforts, the reform, which aims to improve the quality of supply, promote structural adjustment by means of reform, correct the distortion of factor allocation, and expand effective supply, thus promoting the sustained and healthy development of economy and society, is deeply rooted in the hearts of the people.

Yancheng jida machinery manufacturing co., LTD. General manager zhu shunming

Cement, as the foundation of national economy, plays an irreplaceable role in the construction of urban modernization and is known as "food for construction". Compared with the world cement industry, China's cement industry started late, but developed rapidly with the efforts of a large number of cement workers. Especially after 2000, the new dry technology in China gradually promoted, China's cement industry into a high-speed development period.

However, it was the great strides in this period that laid a hidden danger for China's cement overcapacity later, and it finally broke out in a concentrated way at the critical time of national economic development and transformation. In 2015, the total net profit of more than 3,000 domestic cement enterprises was only 32.97 billion yuan, down 58% year on year, and more than half of the enterprises lost money. Despite the remarkable rebound in 2016, the underlying problems have not been solved and the crisis remains.

"Those who observe the situation will gain and those who control the situation will win". Faced with the dilemma, the insightful people in the cement industry have learned the hard way and take advantage of the national supply-side reform. A series of measures, such as merger and reorganization, have been implemented. On August 22, 2016, after being reported to the state council for approval, China building materials group co., ltd. and sinoma group co., ltd. implemented the reorganization. Xiao yaqing, director of the state-owned assets supervision and administration commission of the state council, pointed out that "two-material restructuring" is an important measure to promote supply-side structural reform and other national strategies.

A brand new office building

In addition to institutional and management reforms to make cement enterprises more adaptable to new needs, performance improvements have followed. Yancheng jeddah machinery manufacturing co., LTD. (hereinafter referred to as "yancheng jeddah"), general manager of shun-ming zhu has said at an industry conference the overall supply of China's cement production, cement production capacity is surplus, and high performance cement, fine cement market demand, which requires the cement production enterprise from "supply side" ongoing technological innovation, production to the market needs of high performance concrete.

In June this year, the 13th five-year development plan for the cement industry (hereinafter referred to as the plan) formulated by the China cement association was released. "Planning" according to "building materials industry" the 13th five-year "development guidance" proposed to eliminate composite 32.5 cement, encourage the production and use of 42.5 and above grade cement, pure Portland cement. Combined with the current inspection mechanism of China's composite 32.5 cement, it is proposed that this move will accelerate the promotion of high-performance cement in China.

According to zhu shunming, high-performance cement has many advantages: less clinker consumption and lower enterprise costs; High strength, can greatly improve the precast members of the concrete grade, can reduce the amount of steel or reduce the size of the component section; Good durability, high compactness of the concrete after molding, anti-permeability, anti-freeze, anti-carbonation, corrosion resistance, building service life long and strong adaptability to admixtures, reduce the amount.

However, China's cement industry does not pay much attention to high-performance cement. "The sintering process has always been the focus of attention of enterprises and experts in the industry. It can be said that considerable progress has been made, but there has been insufficient attention to the grinding process for a long time. This is also the current cement performance can not improve, can not adapt to the market for performance requirements of a reason. The good news is that things have changed.

During the 9th international powder mill summit 2017, the pizhou zhonglian visited by the participants is one of the model enterprises of technological transformation in jeddah, yancheng. This transformation significantly reduced the pizhou zhonglian ton cement electricity consumption, its grinding unit energy consumption is only 21-23 degrees, and the most significant is to improve the performance of cement. It is understood that because of the superior performance of cement, xuzhou guanyin airport and other major construction projects are all purchased here.

Neat room

So what's the secret to high performance cement? This has something to do with the JD fine separator manufactured by jedda in yancheng. "The grinding equipment can be said to be the key to the success of the system transformation, and the high-performance powder separator is the key to the key. It is reported that this process is a double closed-circuit pulverization process before and after roller pressing and ball grinding. The materials from the front-end roller press are lifted into the v-type separator, and the coarse materials from the v-type separator are re-extruded by the roller press, and the fine powder is put into the storage to avoid excessive pulverization. In addition, materials after grinding by the ball mill are fed into another JD high-efficiency internal circulation fine powder separator through the tail mill elevator for sorting, and fine powder products are selected for storage, and coarse powder returns to the ball mill for grinding.

With regard to this credit, zhu shunming introduced that JD fine powder separator is the latest scientific and technological product developed by jedda in yancheng on the basis of introducing the high-efficiency powder separator technology of Smith from Denmark, adopting the method of aero aerodynamics analysis and cooperating with domestic famous universities and scientific research institutes. This product integrates the planar eddy current grading principle of o-sepa separator and the finished product collection method of cyclone dust removal.

"Everyone in the cement industry should have a sense of responsibility to promote the improvement of China's construction quality." Zhu shunming often said so. The supply-side reform of cement industry needs not only the reform of the industry itself, but also the efforts of equipment enterprises to facilitate the supply-side reform.