The situation of the implementation of GB 16780-2012 (the norm of energy consumption per unit product of cement) was analyzed and summarized, moreover, the revision opinions were proposed according to relevant national industrial policies and new requirements for energy-saving standards in recent year. Compared with GB 16780-2012, this revision refines the requirements for product energy consumption limits for different types of enterprises. The limited indicators of energy consumption for existing enterprises and new (or expanded) enterprises were decreased by 5% and 5%~7%, respectively.

Starting from several aspects such as comprehensively weighing the design schemes, fully considering the structural characteristics of cement plant, reasonably determining the influencing factors and applicable scope of the structural technology, rationally selecting the boundary value, and correctly understanding the structural standards, this article analyzes the influencing factors for the selection of structural design schemes of cement plant and briefly introduces the general methods, objective function methods and comprehensive selection methods, presents the method for the selection of structural design key schemes of cement plant, such as foundations , structural systems ,etc.

This paper sums up the management experience of cement engineering construction projects, and puts forward some suggestions on doing well the management of large-scale engineering construction projects from the aspects of establishing project headquarters, doing well the scheme demonstration, selecting construction methods, selecting project construction cooperation units and supervision units, and doing well the completion acceptance work, etc.

The secondary development of the high-span beam bottom support formwork equipment for the concrete preheater structure is carried out. The high-span beam bottom support system is divided into three parts: formwork truss support device, end support and installation height adjustment device, and self-disassembly device.  The system has the functions of complete assembly and disassembly and self-demolition, which effectively simplifies the construction operation and construction process, improves the construction efficiency, improves the working environment, and is conducive to the use of advanced construction techniques for the construction of high and large span beam structures. 

Based on the design practice of a 6 000t/d clinker cement production line in Iraq, it introduces the codes about fixed foam extinguishing system for fixed roof tank in NFPA Standard and Chinese Fire Protection Standard, analyses the differences in design parameters of foam?extinguishing?system and layout of foam fire extinguishing facilities, elaborates the reasons for the differences, gives some advices about the selection of design parameters.

Aiming at the high-temperature corrosion problems in the preheater, a new metal-based composite ceramic coating coupon had been developed. The ceramic coating was densely attached to the surface of the metal material through the high-temperature composite method, which could not only effectively block the metal corrosion of the matrix material, but also bring excellent toughness to ensure the safety of utilization; meanwhile, the comprehensive use effect was better.

With the increase of service life of the bag filter at kiln tail, the equipment body will show different degrees of corrosion under the action of the flue gas. Aiming at the corrosion problem of the bag filter, the mechanism of corrosion is analyzed. The results show that chemical corrosion and electrochemical corrosion caused by the condensation of corrosive substances in the low-temperature flue gas are the main reasons for the corrosion. Measures such as reducing the emission of corrosive gases, reducing the air leakage rate, keeping the dust collector insulated, and adopting high-quality anti-corrosion coatings can increase the service life of the bag filter and ensure the normal operation of the system.

The paper mainly introduced LMY roller mill pulverizing system and its application in the two-stage desulfurization pulverizing system of a circulating fluidized bed boiler. The system can simultaneously produce two different specifications of desulfurization powder, to meet the particle size requirements of the desulfurization powder in the furnace and the desulfurization powder outside the furnace in the two-stage desulfurization system of the circulating fluidized bed boiler, which provides a new way of application of the roller mill in preparation of the desulfurization powder in the circulating fluidized bed boiler.

This paper analyzes the relationship between kiln shell ovality, under tyre clearance and tyre migration; it also analyzes the influence of shell ovality on refractory lining with typical cases of kiln shell ovality affecting refractory lining. And the technical measures to reduce shell ovality and improve the service life of refractory lining are introduced.

This paper introduces the problems existing in the process of conveying bulk materials by belt conveyor, compares and analyzes the advantages and disadvantages of the current common electric roller brush sweeper and scraper sweeper. A rapping idler cleaner based on these two equipments is invented, which can effectively clean all materials by combining with roller brush sweeper.

Use the vibration collector to collect the vibration data of the fan, and analyze the vibration reason of the fan through the vibration data. The vibration problem of the fan is eliminated by using the methods of online digging, surfacing welding repair and air dynamic balance correction.

Through the laboratory tests and industrial application, it is found that the more metallic iron content, the higher power consumption of steel slag grinding. The grindability of steel slag is also affected. In order to reduce the grinding power consumption and maintenance costs, the grinding system should be equipped with high-efficiency iron removal devices. The metallic iron content of steel slag should be controlled below 1.5% during the industry application.

Based on partial test data of ground cement, the prediction accuracy of 28d compressive strength of cement is compared between the single-variable one-time regression equation obtained by the method in appendix a of JC/T 738 and the multiple-variable one-time regression equation obtained by the data analysis function of Excel. The comparison results show that the prediction value of 28d compressive strength of cement is more accurate by using the multiple regression equation derived from Excel data.

This paper introduces the working principle of the cement setting time automatic measuring instrument, and analyzes its practical application effect in cement production. The data accuracy is better than the national standard.

The principle and method of developing parameterized drawing software for hydraulic control cabinet of cooler are introduced. By optimizing the drawing, establishing the VBA code, and the second development of the CAD software, the parameterized drawing of the equipment drawing is realized, and the drawing efficiency is improved, and the repeated workload is reduced. The software can also be used for other equipment and process drawing work.

Combined with the design and commissioning experience of Profibus-PA bus of a project in UAE, this paper summarizes the points for attention of Profibus-PA bus design, communication configuration, and on-site interference handling in cement plant. The actual on-site inspection shows that the system is running stably, and the measurement data can accurately reflect the actual production situation.

Causes for the high fineness, moisture content and power consumption of the pulverized coal preparation are analyzed. By optimizing the air duct of the coal mill, changing the lock air valve, adjusting the length of drying bin and grinding bin, the capacity the coal mill is increased by 3.5t/h and the moisture is reduced by 1.0%, the fineness is controlled to below 6%.

The causes of frequent failures such as fracture of coal mill belt scale, fracture of tail drum bearing seat, and fracture of scraper and chain of sweeper were analyzed. By lengthening the scale body, extending the baffle plate and improving the installation mode of bearings, the operating reliability of the coal mill system is increased, the power consumption of the coal mill system is reduced, and the labor intensity of the workers is reduced.

By analyzing the particle size of the inlet and return materials of the cement roller press combined grinding system, a new wear resistant sieve plate was added under the baffle plate of the classifier to separate the outer side of the impeller and above the inner wall of the drum, after the improvement, the steel ball grading of the mill was adjusted improve the cement quality of the cement grinding production line. 

This paper introduces the source and composition of construction waste，as well as the policies and regulations to promote construction waste disposal industry. It also analyzes the current resource utilization ratio, relevant technology and industry scenario in China. It is suggested to improve the policies and regulations on the recycling disposal of construction waste, and give leading enterprises full play in the industrial scale production, big data management, and healthy and rapid development of the industry.

Taking the 10 000t/d cement clinker production line as an example, the waste heat utilization before and after the waste heat of the flue gas at the outlet of the grate cooler is compared and analyzed. The recycling of the flue gas outside the cooler effectively improves the waste heat power generation capacity and energy efficiency. The calculation results show that the power generation has been increased from 13.9kW·h/t.cl to 18.5kW·h/t.cl.

Through the case analysis of several quality accidents caused by concrete adaptability differences, the cement concrete adaptability problem is not only related to cement, but also related to admixture, sand and stone materials, to improve the adaptability of concrete must be through cement enterprises, admixture manufacturers, mixing stations tri-party joint efforts to achieve good adaptability of concrete.