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- Domestic cement grinding process gap in the performance
- Release date:2019-03-11 Clicks:44 Classification:Company News
'there is no doubt that one of the main purposes of being a company is to make money,' Mr. Zhu said. 'that's the key to driving innovation.' However, the existence of an enterprise is not just for profit. How to use the technology and service progress brought by its own development to improve people's livelihood and realize social value is the ultimate value of a responsible enterprise. ...
At present, in promoting green development, the era background of the development of science, the cement industry to enhance efforts in energy conservation and emissions reduction, as the new energy consumption per unit product consumption quota "cement", the implementation of the cement industry will face more severe challenges, energy saving and emission reduction in cement production, one of the main part of energy consumption in grinding system energy saving is a major concern.
Statistical data shows that the power consumption of grinding reaches about 70% of the power consumption of the entire cement production process, so the energy saving potential is very huge. For this reason, in recent years the vertical mill finishing mill, roller press grinding and combined grinding process model, and advanced equipment in the domestic large-scale applications, to a certain extent, reduce the energy consumption of the domestic cement industry unit grinding, but compared with foreign advanced technology, high energy consumption of cement production in China's current situation was not reversed.
"There is no big gap between domestic grinding equipment and manufacturing process and that of foreign countries. Some products even lead the world's advanced level. However, the energy consumption of grinding is still high. A few days ago, zhu shunming, general manager of yancheng jedda machinery manufacturing co., LTD. (hereinafter referred to as jedda machinery), expressed in an exchange with the China cement network "China cement industry top 100 tour" team composed of Chen yongjun, executive director of China cement network brand center, he xuelu, brand center manager and others.
Jeddah machinery is the original state-owned medium-sized enterprises yancheng building materials machinery factory in the restructuring of private technology enterprises, as the national building materials machinery standardization technical committee member units and important building materials machinery production base in jiangsu province, the company always adhere to "provide customers with satisfactory products, efforts to the pursuit of zero defect management" the quality policy, product in strict accordance with the national standards organizations production, many times by the national building materials machinery quality inspection center for superior products.
Over the years, relying on the strong independent research and development ability, jedda machinery attaches great importance to the research and development of new products and technical innovation, and has developed such outstanding products as SM series grinding mill, Sepax jedda high-efficiency eddy current separator, JD series roller press, o-sepa separator, double-rotor separator, and closed-circuit high fine grinding internal transformation supporting equipment. Jedda machinery has been deeply engaged in the field of cement grinding machinery. With excellent quality and perfect service, its products sell well in China and are exported to more than ten countries, such as Sudan, South Africa and Greece.
Shun-ming zhu: "so many people in the debate over the pros and cons of vertical mill, roller mill, ball mill, also in discussion of cement grinding ball, in fact, in terms of equipment, and there is no absolute advantage, and various kinds of grinding equipment itself the corresponding deficiencies, the key lies in whether cement enterprises integrating with actual situation of the production line equipment, a balanced system."
According to introduction, cement grinding process itself is not easy broken, its technical process is very complex, in a single grinding system in the operation of the energy consumption constraints is not just limited to the equipment of grinding system itself, for the ore quality different, personnel, equipment and so on factors, often large equipment use differences.
Shun-ming zhu to China cement net reporter mentioned such an example, a few years ago a well-known domestic cement enterprises to introduce a set of roller mill equipment from abroad as cement grinding, and the system in foreign countries and in the process of the production trial run well, but in practical production such as operation management link problems too much, failed to meet the design intent, had to be used as half final grinding system.
Shun-ming zhu said that the current domestic grinding system equipment technical level has been able to compete with the world advanced level, so in the face of the current cement industry growing trend of energy conservation and emissions reduction, cement enterprises is necessary to use domestic advanced equipment on the original old system upgrading, on the other hand must according to the actual production line make grinding process upgrade scheme, and strengthening the management of the production of fine, so in order to realize grinding system of comprehensive optimization.
In terms of equipment technology, jeddah machinery "double closed circuit combined grinding system" is one of the most outstanding representatives in the current domestic cement grinding process transformation and upgrading, which further indicates that cement grinding equipment is not the fundamental factor restricting the reduction of unit energy consumption.
As we have learned, in May 2012, tianshan stock kuqa branch of the 5000t/d production line roller ball mill "double closed circuit combined grinding system" transformation project began to implement, after a period of operation, the company has a 4.2 13m cement grinding system output has been increased from the original 250t/h to 350t/h. Not only that, the system technology also greatly reduced the energy consumption of the grinding system. It is estimated that, due to the increase of output, the system power consumption decreased by more than 20% (about 6kWh/t) year on year. The calculation is based on 350t/h annual operation for 300 days, and the average comprehensive electricity charge is calculated as 0.60 yuan /kWh, which will save more than 9 million yuan of electricity charge every year.
Zhu shunming put forward his own views on how to realize the balance of the grinding system and improve the operating efficiency of the grinding system in cement enterprises from the perspective of "software".
First of all, the quality of operating personnel in some existing cement enterprises is relatively low, and they lack a deep understanding of the grinding process system and operation data, which restricts the performance of equipment. Therefore, it is particularly important to improve the quality level of personnel through systematic training in the aspect of energy saving and consumption reduction in the grinding process of cement enterprises.
Secondly, the level of enterprise management needs to be further improved. At present, some cement enterprises do not really talk with data in the production line operation, and fail to effectively control the energy consumption index according to the production line operation data. Take the working current of the mill as an example, "what is the reason for the higher and the lower, what is the influence on the production efficiency, how to find the balance between output and power consumption, and then make the efficiency reach the highest point" are all the problems that the cement enterprises need to think seriously.
Finally, it should not be neglected that as equipment suppliers, they have a clearer understanding of the equipment performance and the use effect under various working conditions. Therefore, doing a good job in related services plays a crucial role in improving the grinding efficiency. Based on this, jeddah machinery has set up a professional technical team to develop energy-saving solutions for the grinding system according to the actual production line of cement enterprises, and provide comprehensive training services to help enterprises improve the level of fine management, which plays an important role in helping cement grinding system reduce consumption.
Zhu shunming believes that there is no doubt that one of the most important original intention of enterprises is to make profits, which is also the key to promote the continuous innovation and development of enterprises. However, the existence of an enterprise is not just for profit. How to use the technology and service progress brought by its own development to improve people's livelihood and realize social value is the ultimate value of a responsible enterprise. Grinding system energy saving is a complex process, the advanced equipment will be truly integrated with the production conditions of cement enterprises, really contribute to the cement enterprises to reduce energy consumption level, is the equipment enterprises should do and must do, jeddah machinery will spare no effort in this regard.
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