This article explicates the connotation of transition finance, compares the difference and connections with green finance, and clarifies the positive role of transition finance in China's pursuit of achieving the "dual carbon" goals and assisting the green and low carbon transformation of traditional high-emitting and high energy-consuming ("two-high") industries. The cement industry is a typical "two-high" traditional industry, supported by transition finance. The Directory of Economic Activities Supported by Transition Finance delineates the strategies and fundamental principles for curtailing carbon emissions in the cement production. In China, the inaugural batch of cement industry transition finance cases have been initiated with the utilization of bank loans. It is foreseeable that, in the forthcoming phase, a more extensive array of financial institutions and financial instruments will partake in this initiative. The cement enterprises should, with their own characteristics, proactively seek transition finance support to catalyze green and low-carbon development, thereby contributing to the realization of the "dual carbon" goals.

With the introduction of national energy conservation and emission reduction policies, the improvement of energy efficiency of cement grinding system has become particularly urgent. The conventional cement roller press combined/semi-final grinding process technology has some technical problems, such as incompatibility between materials and systems, mismatch between systems and equipment, and lack of adjustability. In view of this, energy-saving and low-carbon technologies such as online adjustable flexible grinding process based on the coupling concept of "material system equipment" and high-efficiency powder selection equipment with side inlet air with settling chamber have been innovatively developed, and have been successfully applied to many industrial projects. Industrial application practice shows that the cement roller press combined grinding system with "large roller press+small ball mill" can significantly increase the system output, reduce the process power consumption and ensure the performance of cement products under the operation mode of "ultra-low resistance, ultra-low air volume and ultra-high concentration”. Compared with the national first-class energy consumption quota standard, the average power saving per ton of cement is as high as 5.1kW·h, which has reached the international leading level, providing strong support for the cement industry to achieve the goal of carbon peak and carbon neutralization.

A high-efficiency simulation tool for the V-type powder separator was developed using the PIC (Particle-in-Cell) method within the OpenFOAM open-source software. The tool was validated for its high accuracy and reliability in predicting pressure drop and particle classification efficiency in V-type powder separators. Single-factor studies revealed that the dispersion plate primarily affects the equipment’s pressure drop, while the classification plate significantly impacts particle classification efficiency. Increasing the inlet air velocity effectively enhances classification efficiency but also leads to a higher pressure drop. Multi-factor analysis identified two optimization pathways: adjusting the dispersion plate angle and closure state to minimize energy consumption, and optimizing the classification plate angle and spacing to maximize classification efficiency. This study enabled the customized development of a simulation model, providing a crucial technological foundation for reducing dependence on foreign technologies and achieving independent control over simulation tools.

Under the context of carbon peaking and carbon neutrality goals, oxygen-enriched combustion combined with flue gas circulation technology represents the development direction of new processes for future cement firing systems. Oxygen-enriched air entering the rotary kiln through different inlet methods affects the thermal regime of the rotary kiln differently. To compare the effects of various oxygen-enriched air inlet methods, this paper employs numerical simulation to investigate their influence on temperature distribution, peak temperature, and NOX generation in the rotary kiln. When oxygen is predominantly introduced through the primary air, the variation trends of the temperature field, temperature peak, and NOX generation in the kiln align with those caused by increasing the oxygen-enriched percentage. However, excessive oxygen enrichment in the primary air will lead to a significant increase in NOX generation, shorten the length of the high-temperature zone, and reduce temperature uniformity in the kiln. The effect of oxygen entering the kiln through primary air is better than that through secondary air, and the oxygen enrichment percentage of primary air should be reasonably controlled in actual use.

The traditional logistics system of cement plants suffers from issues including cumbersome processes, low efficiency, and aging equipment, which seriously restrict the efficiency of logistics shipment operations. In order to improve the efficiency of cement shipment, an intelligent logistics system for cement plants has been designed and developed.This system is mainly composed of an intelligent management system for vehicle entry and exit, an unattended metering system, a remote centralized control fixed-value filling system for bulk cement, an automatic counting system for bagged cement, and a mobile handheld operation terminal receiving system. It realizes the information and data interaction among various systems and the intelligent control of the logistics operation process.In addition, the system is equipped with an Oracle database and provides standardized external data interfaces, achieving the connection of data and business with multiple information technology platforms.The full closed-loop management  effectively reduces the input of manpower and material resources, improves logistics efficiency, reduces logistics costs, establishes an efficient and stable factory logistics model, and brings significant economic benefits to the enterprise.

Taking the grinding system of "CLF170-100 roller press + ?4.2m×12.5m ball mill" in the 5 000t/d cement production line as the research object.  The relationship between the gradation of the grinding media in the ball mill and the particle size of the material entering the mill was analyzed, as well as the problem of the excessively wide particle size of the material entering the mill. By transforming the structure of the side baffle of the roller press, adding two dispersing devices in the feeding chute above the V-type separator, and adding a zipper conveyor below the discharger of the dust collector in the roller press system, and optimizing the fineness of the returned ash of the dust collector in the pre-grinding system, the over-grinding of the ball mill has been effectively solved. After the transformation, the ball mill operates stably, the quality of the finished cement is significantly improved, the hourly output is increased by 10t/h, the comprehensive power consumption is reduced by 1kW·h/t, and the electricity cost can be saved by about 36 000 yuan per month, with remarkable social and economic benefits.

To further achieve energy conservation and consumption reduction, multiple optimization measures were implemented for the single-drive double-circle flow cement grinding system in cement production. These included replacing overlay welded roller sleeve of the roller press with studded roller sleeves, adopting lightweight liners and "Z"-type high-efficiency activation rings in the ball mill, adjusting the grinding media gradation, upgrading to high-efficiency energy-saving fans, improving material distribution uniformity, enhancing production conditions in the grinding workshop, and optimizing system process parameters. Post-optimization, the system demonstrated stable operation and consistent product quality. When producing P·O42.5 ordinary cement, the system output increased to 260t/h, and the power consumption of the cement grinding process decreased to 24.8kW·h/t, meeting China's national first-level energy consumption limit standard. The significant energy-saving effects provide valuable reference for energy efficiency improvements in cement industry grinding systems.

The original limestone crushing system of a 5 000t/d cement production line employed a heavy-duty plate feeder and a double-rotor hammer crusher. However, it suffered from low hourly output and large particle size of crushed materials. To address these issues, technical modifications included installing a five-roller screening machine between the heavy-duty plate feeder and the crusher, replacing the original crusher with a new double-rotor hammer crusher, and adjusting the feeder through elevation, truncation, and repositioning. These improvements reduced the crusher grate gaps, increased the hourly output to 1 200t/h, significantly decreased the particle size of crushed materials, enhanced equipment stability, and extended the service life of spare parts. Post-reform, the vertical mill’s hourly output rose from 390t/h to 410t/h, grinding power consumption decreased by 1.30 kW·h/t, and annual savings in electricity, labor, and spare parts costs reached approximately 1.192 million yuan. The investment is expected to be recouped within three years, demonstrating notable success. Further consolidation and enhancement of the technical outcomes can be achieved through meticulous planning of retrofit locations, strengthened collaboration between equipment manufacturers and construction teams, continuous optimization of equipment performance, and enhanced employee training and technical support.

As a critical load-bearing component of the transmission system in cement rotary kilns, the thrust roller device imposes high-quality requirements on cast steel materials. However, casting defects such as cracks,porosity, and sand inclusions still will occur during manufacturing. By analyzing the chemical composition and mechanical properties of the cast steel grade ZG42Cr1Mo used for thrust rollers, the J507 low-hydrogen electrode was selected. Corresponding repair processes, including drilling stop holes, machining excavation, and grinding removal, were developed to address linear and nonlinear defects in the thrust rollers. During the repair process, critical parameters such as preheating temperature, electrode drying, and interpass temperature were strictly controlled. Multi-layer and multi-pass welding techniques were employed to ensure welding quality. Post-weld insulation and slow cooling treatments were implemented to prevent crack formation, followed by magnetic particle inspection and hardness testing. This repair solution effectively resolved quality instability issues in thrust rollers, enhanced product competitiveness, achieved significant economic benefits, and holds high promotional value.

The automatic fire alarm system plays a crucial role in safeguarding personnel lives and equipment safety in cement plants. This paper introduces the definition and components of the automatic fire alarm system, elaborates on key design aspects including the coverage scope, configuration selection, selection and placement of fire detectors and audible/visual alarms, cabling requirements, and networking strategies for fire alarm controllers. Taking a 5 000t/d cement production line project in Southeast Asia as an example, the practical application effectiveness of the system in cement plants is demonstrated, highlighting its significance in detecting fire hazards and early-stage fires. When designing fire alarm systems for cement plants, strict compliance with the latest national and industry-specific fire protection regulations is essential. Additionally, the unique characteristics of cement production facilities must be thoroughly integrated to ensure system reliability, prevent fire incidents, and enhance overall fire protection and safety management standards.

In view of the problems of many operation steps, long grid-connection time and easy misoperatio in the manual grid-connection process of WHR in cement line, One-key grid-connected automatic control technology with SFC language was developed. The one-key grid-connected technology integrated signals such as the excitation system, the synchronization system, the steam turbine control system, and the circuit breaker status points into the DCS system， optimized the software and hardware configuration. Then added the new sequence control and logical judgments. Finally, one-key grid-connected was achieved with the SFC programming language. Practice shows that using the implementation of the One-key grid-connected technology, the operation was simple and reliable, the later periods was reduced, the grid connection operation time could be shortened from 3~5 minutes to 1~1.5 minutes, the grid connection success rate was high, and the misoperation rate was reduced.

This study explores the influence of multi-component solid waste under separate grinding processes on the performance of cementitious materials. Multiple technical schemes were designed to investigate the variation patterns of cement strength during the synergistic application of multi-component solid waste. The results indicate that fly ash exhibits significant grinding-aid effects when its dosage <10%, with a specific surface area of 500~550m2/kg and SO3 content of 2.1%~2.5%. The composite blending of fly ash with ultra-fine powder (prepared from refined steel slag and granulated blast furnace slag at a 1:1 ratio) demonstrates superior 3d and 28d cement strengths compared to fly ash blended with slag powder, suggesting a mutual activation effect among fly ash, refined steel slag, and slag. The utilization of fly ash-based multi-component solid waste in cement and concrete production not only addresses the challenge of low solid waste utilization but also promotes green and low-carbon development in the building materials industry.

The utilization of rice husk ash in the production of high-strength concrete facilitates the sustainable recycling of this agricultural byproduct, and the mechanical properties of rice husk ash concrete are significantly influenced by the curing conditions. The impact of rice husk ash, either used singly or in combination with silica fume, on the mechanical and microstructural properties of ultra-high-strength concrete was systematically evaluated under various curing conditions, including standard curing, steam curing at 90°C, and dry heat curing. The experimental results showed that ultra-high-strength concrete incorporating rice husk ash exhibits favorable mechanical properties and microstructural features, and an increased proportion of rice husk ash substantially enhances the densification and uniformity of the concrete, enhancing the strength and durability of the concrete, and contributes to the broader application of rice husk ash concrete in civil engineering infrastructure.

The application of modified spherical phosphogypsum in cement production in South Kalimantan Island, Indonesia was studied. Modified spherical phosphogypsum is an industrial by-product prepared by adding alkaline substances to phosphogypsum and using a ball forming or granulation mechanism. The study focuses on the cement produced in the region, and gradually adjusts the ratio of natural gypsum to modified spherical phosphogypsum based on the gypsum retarding mechanism. Combined with relevant standards, tests were conducted on cement setting time, compressive strength, and other parameters. The experimental results show that the SO₃ content in cement is positively correlated with setting time, but only exists within a specific range. By adjusting the gypsum ratio, the SO₃ content in cement can be reduced to about 1.6%, while maintaining the setting time and compressive strength to meet local demand. In addition, the study also found that it is feasible to use modified phosphogypsum instead of natural gypsum to produce cement in the absence of natural gypsum, and the use of spherical modified phosphogypsum is more effective, with good fluidity and less fluctuation in SO₃ content.