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Study on synthesis of CaTiO3 material by high temperature solid state method Liang Jianing Yang Jian He Lijie 　Su Rui Dai Chenchen 　Hao Chunlai REFRACTORIES & LIME    2023, 48 (4): 5-7.   Abstract （120）            Knowledge map    Save In this paper, calcium carbonate（CaCO3），calcium hydroxide [Ca(OH)2] and titanium dioxide（TiO2） were used as raw materials, the ratio of calcium to titanium was 1，and 3% poly PVA was added. After mixing, molding and drying, CaTiO3 samples were prepared. The samples were sintered at 1 500 ℃ , 1 550 ℃ , 1 600 ℃，1 650 ℃，1 700 ℃ respectively. XRD was used to analyze the phase composition of CaTiO3 material, and SEM was used to analyze its microstructure. Related Articles | Metrics

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Production technology of suspension calcination of carbide slag to prepare#br# medium-speed lime#br# Yang Zhanchun　Pang Huanjun　Zhang Linjin　Tang Dan　Wu Heng REFRACTORIES & LIME    2023, 48 (6): 48-50.   Abstract （97）            Knowledge map    Save Calcium carbide is an important basic chemical raw material for the production of PVC, lime nitrogen，acetylene gas and other products. About 50 million tons of calcium carbide slag are produced every year，in order to promote the transformation from“resources-productsemissions” model to“resources-products-renewable resources” model，reduce the consumption of limestone ore and achieve the double carbon target. This paper introduces in detail a kind of energy-saving and environment-friendly circulating suspension calcination technology of calcium carbide slag, which can produce active lime as well as medium-speed lime through the adjustment of circulating ratio，so that the value of circulating utilization of calcium carbide slag can be greatly increased，and the system energy consumption is low，environmental protection，stable and reliable operation. Related Articles | Metrics

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Development and application of corundum-spinel carbon-free ladle brick Su Xin REFRACTORIES & LIME    2023, 48 (4): 15-17.   Abstract （90）            Knowledge map    Save In order to meet the technical requirements for the production of low carbon steel and ultra-low carbon steel, brown corundum, plate-like corundum, fused magnesium aluminate spinel powder as raw materials, fused magnesia powder and alumina micro powder as additives, and almagnesia powder as binder, the machine pressed unburned corundum spinel carbon free brick was developed. The results show that the performance of the brick is the best when the content of fused magnesia powder and α-alumina powder is 3% and 8% respectively, and the service life of the brick in the molten pool and bottom of 90 ton LF Ladle is up to 105 furnaces. Related Articles | Metrics

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Improvement of calcining technology for low calorific value gas in double D lime kiln Tong XingXie Tianhua REFRACTORIES & LIME    2023, 48 (3): 35-37.   Abstract （84）            Knowledge map    Save Under the condition of low calorific value converter gas as fuel, the limestone suitable for low calorific value calcination process is selected after high coke mixed gas replaced by converter gas in the double D lime kiln of Nangang. In view of the adverse effects of low calorific value gas, a series of equipment and process improvements are carried out, which effectively overcome the disadvantages of low calorific value gas, stabilize kiln production and increase the production capacity of double D lime kiln. Related Articles | Metrics

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Preparation of SiC-mullite-zirconia multiphase material Li Fengyou 　Li Yuangao 　Zhang Ling REFRACTORIES & LIME    2023, 48 (5): 15-19.   Abstract （84）            Knowledge map    Save The chromium oxide sintering process is applied to produce the SiC-mullite-zirconia multiphase material featuring excellent performance，with nano-η-Al 2O3 powder taken as the aluminum source and micro-silica as the silicon source to synthesize the associative phase of mullite. With the experiment，the authors probe into the influence of firing temperature exerted on the physical property，phase composition and micro-structure of a multiphase material， and conduct comprehensive thermal analysis of the raw materials. The results show that the SiO2 generated by SiC oxidation is highly active so that it starts to react with the η-Al2O3 in the transient phase under 996.5 ℃，forming solid mullite；the samples boast the best overall performance under 1 600 ℃，with their bulk density reaching 2.82 g/cm3 ，apparent porosity 3.2%, flexural strength 143.2 MPa at room temperature, while oxidation mass gain 0.65% only；the calcined ZrO2 losses its stability，transforms from c-ZrO2 to m-ZrO2，and evenly distributed in the samples；the mullite crystallizes well and bonds tightly with SiC. Key words：Nano-η-Al 2O3；Chromium oxi Related Articles | Metrics

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REFRACTORIES & LIME    2023, 48 (3): 47-55.   Abstract （81）            Knowledge map    Save Related Articles | Metrics

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Situation and development of iron and steel and metallurgical lime production in China Jia Nannan　Li Xiao REFRACTORIES & LIME    2023, 48 (4): 1-4.   Abstract （81）            Knowledge map    Save This paper summarizes the present situation of iron and steel production and metallurgical lime production in China. Combined with the national industrial policy guidance， it analyzes the situation faced by the metallurgical lime industry development in our country，and advances some relevant development suggestions. Related Articles | Metrics

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Effect of impurity content on high temperature properties of silicon brick Li Yuan REFRACTORIES & LIME    2023, 48 (4): 11-14.   Abstract （81）            Knowledge map    Save The impurities in silica brick have a certain effect on it s refractoriness and refractoriness under load，a certain amount of impurities can promote the crystal transformation of quartz，which is beneficial to reduce the true density and thermal expansion coefficient of silica brick. The effects of various impurities on different properties of the product should be fully considered in the production，and the contents of impurities such as Na2O，K2O and Al2O3 should be scientifically controlled so as to improve the comprehensive properties of the product. Related Articles | Metrics

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Application prospect of biomass energy in low-carbon production of lime industry Yan Bingkuan REFRACTORIES & LIME    2023, 48 (4): 43-45.   Abstract （81）            Knowledge map    Save The process of lime production has high carbon emission and causes pollution to the environment. The application of biomass energy in the lime industry，whose carbon emission is close to zero，can achieve the carbon neutral target, which is of great significance to the lowcarbon development of the lime industry Related Articles | Metrics

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Practice and research of calcining low-strength and easy-to-crack limestone by Maerz kiln Chen Qingfeng REFRACTORIES & LIME    2023, 48 (4): 25-29.   Abstract （79）            Knowledge map    Save On the basis of experiments, the technology of improving the process measures of Maerz kiln was developed according to the characteristics of low-strength and easy-to-crack of local limestone in Democratic Republic of the Congo, which achieved good results and successfully calcined quicklime. Suggestions for optimization were also proposed for the existing problems. This technical solution can provide the industry peers with reference for producing quicklime and improving efficiency and quality. Related Articles | Metrics

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Common problems and improvement measures of flue gas pollutants treatment in refractory enterprises Zhao HuiminXu Chengyang　Tao JinDeng HuaxiangHuo WenqiangLiu Changdong REFRACTORIES & LIME    2023, 48 (3): 25-29.   Abstract （75）            Knowledge map    Save The organized and in-depth treatment of flue gas pollutants carried out by refractory enterprises helps to reduce the emissions of particulate matter, SO2 and NOx in the atmosphere. This paper discusses and analyzes the common problems in the treatment of flue gas pollutants in hundreds of refractory enterprises in Zhengzhou, and puts forward improvement measures based on the problems, in order to provide reference for energy conservation and pollution reduction of refractory enterprises. Related Articles | Metrics

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Research on the path and countermeasures for peak carbon emissions and carbon#br# neutrality in Liaoning magnesite industry#br# Zhou Xiaolei　Liu Shuang　Wang Lilin　Gu Pan　Luo Xudong REFRACTORIES & LIME    2023, 48 (6): 1-4.   Abstract （72）            Knowledge map    Save U n d e r t h e b a c k g r o u n d o f p r i o r i t i z i n g e c o l o g i c a l p r o t e c t i o n ， c o n s e r v a t i o n a n d intensive，green and low-carbon development nationwide，Liaoning magnesite industry faces the challenge of self-revolution，and the opportunity presented by the strategy of green and lowcarbon transformation and upgrading. In the paper, by figuring out the current situation of carbon emissions at home and abroad，the advantages and disadvantages of Liaoning magnesite industry are analyzed, the time limit，path and countermeasures of peak carbon emissions and carbon neutrality in the industry are put forward，and the high-quality development path of Liaoning magnesite industry towards green and low-carbon is explored. Related Articles | Metrics

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Use and management of refractories in tundish Cui Xinhua REFRACTORIES & LIME    2023, 48 (3): 21-24.   Abstract （70）            Knowledge map    Save Through analyzing the composition of refractories in tundish and the damage problems of refractories in daily work, this paper analyzes the design, use and management of refractories one by one, finds out the causes and puts forward solutions to ensure the safe use of refractories Related Articles | Metrics

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Repair measures for supporting arch of double-bore kiln Wu Jinsong　Yan Zhenhui　Sun Haitao REFRACTORIES & LIME    2023, 48 (3): 32-34.   Abstract （67）            Knowledge map    Save Combined with the burning down of supporting arch of double-bore kiln, the steel frame supporting mould was used for repairing. Compared with the removal and relaying of double-bore kiln, the repair time is greatly shortened and the repair cost is saved about 5.6 million yuan. The supporting arch has been put into operation for more than one year after restoration, but it has not been found that the refractory in the kiln has fallen off, the pressure in the kiln and the energy consumption of the product have been reduced obviously. Related Articles | Metrics

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Practice of improving the automatic casting rate of 120 t ladle Dou Heng REFRACTORIES & LIME    2023, 48 (4): 18-21.   Abstract （67）            Knowledge map    Save A foreign steel company（hereinafter referred to as Company A）has been equipped with two 120 t converters and one LF，two 7-strand billet CCM of 165 mm × 165 mm，and one 4-strand rectangular billet CCM. Company A has a LF refining ratio of about 10% and mainly produces B500B series，HRB400 series，Q195L and SS400 products. This paper introduces the influencing factors and improvement measures of improving the automatic casting rate of the 120 t ladle in the Company A based on hands-on experience. Related Articles | Metrics

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Optimization of 300 t steel ladle edge castable and improvement of masonry structure Xiao Tongda REFRACTORIES & LIME    2023, 48 (4): 22-24.   Abstract （66）            Knowledge map    Save Adding scrap steel in refining process of ladle furnace will lead to unstable control of ladle liquid level，slagging and abnormal erosion，by taking measures such as optimizing the size of ladle egde brick press，applying L-shaped slag line brick and improving the quality of castable，the unplanned offline ratio of ladle due to abnormal erosion has been reduced by 70%， the steel-piercing accident in ladle edge is effectively controlled. Related Articles | Metrics

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Analysis of application prospect of electric fusion technology Liu Jie　Wu Zhande REFRACTORIES & LIME    2023, 48 (3): 1-3.   Abstract （65）            Knowledge map    Save Under the background of carbon peaking and carbon neutrality, this paper introduces the policy and application status of electric fusion technology, analyzes the three functions of the electric fusion technology in the production and application of refractory, and puts forward some suggestions on the application of the electric fusion technology in the refractory industry and its wide application prospect. Related Articles | Metrics

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Research progress of ceramic materials prepared by gas pressure sintering Mu XinMa BeiyueLiu Kun　Ding Jun REFRACTORIES & LIME    2023, 48 (3): 12-17.   Abstract （65）            Knowledge map    Save Gas pressure sintering technology can be used for the preparation of highly densified ceramic materials with complex shapes，which is an economical，practical and important sintering technology. In this paper，the gas pressure sintering technology and related equipment are introduced，and the related research progress on the preparation of ceramic materials by gas pressure sintering technology are summarized. Meanwhile，the development direction for preparing ceramic materials by gas pressure sintering technology is prospected Related Articles | Metrics

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REFRACTORIES & LIME    2024, 49 (6): 1-.   Abstract （65）            Knowledge map    Save Related Articles | Metrics

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REFRACTORIES & LIME    2024, 49 (1): 50-.   Abstract （64）            Knowledge map    Save Related Articles | Metrics

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Practice and research on calcining small-size limestone in rotary kiln Zhang Libin REFRACTORIES & LIME    2023, 48 (4): 32-33.   Abstract （63）            Knowledge map    Save Based on the reality of the enterprise，expounded the significance of calcination on improving the resource utilization and cost efficiency，analyzing the calcination scheme， introduced the practice and experience of innovating the process operation and optimizing the process parameters of the rotary kiln. Related Articles | Metrics

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REFRACTORIES & LIME    2023, 48 (3): 63-66.   Abstract （62）            Knowledge map    Save Related Articles | Metrics

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Problems in production and commissioning of double chamber kiln Li Lei Tang Wenhua REFRACTORIES & LIME    2023, 48 (4): 34-35.   Abstract （61）            Knowledge map    Save This paper briefly describes the problems in the production and commissioning process of double chamber kiln，such as process calculation，frequent leakage of pulverized coal pipe， unstable kiln quality，air leakage of kiln body reversing valve，etc. analyzes the causes，and puts forward improvement measures to solve. After the improvement，the product quality has been greatly improved. Related Articles | Metrics

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Technical innovation and application of new type of lime shaft kiln Liu Jian REFRACTORIES & LIME    2023, 48 (4): 41-42.   Abstract （61）            Knowledge map    Save This paper introduces the innovation technology，application effect and typical cases of WDH new type of energy saving and environmental protection mechanized lime shaft kiln. The kiln has large output，stable operation of equipment，excellent lime quality and environmental emission standards are far superior to national standards. Related Articles | Metrics

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Research on reducing the heat consumption of calcination system in lime rotary kiln Zhang Ping 　Dai Weilin REFRACTORIES & LIME    2023, 48 (4): 30-31.   Abstract （60）            Knowledge map    Save The lime rotary kiln production line has the advantages of large output，uniform product quality，high activity and high utilization rate of raw materials．However，compared with shaft kiln，the production heat consumption is on the high side．Therefore，while maintaining its many advantages，further reducing the heat consumption is an important direction in optimization and improvement of rotary kiln lime technology and equipment．This article introduces the method of heat consumption of lime calcination system in rotary kiln by optimizing the calcination technology and structure of vertical preheater，rotary kiln and vertical cooler． Related Articles | Metrics

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REFRACTORIES & LIME    2024, 49 (4): 41-.   Abstract （60）            Knowledge map    Save Related Articles | Metrics

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REFRACTORIES & LIME    2023, 48 (4): 58-60.   Abstract （57）            Knowledge map    Save Related Articles | Metrics

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REFRACTORIES & LIME    2023, 48 (3): 56-62.   Abstract （57）            Knowledge map    Save Related Articles | Metrics

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Summary of integrated technology of dust removal and low-temperature denitration Xu Ruijie Yan Binkuan Han Haizhao Wu Shuai REFRACTORIES & LIME    2023, 48 (3): 38-39.   Abstract （57）            Knowledge map    Save A compound filter bag dust collector equipment which integrates dust removal and lowtemperature denitration is introduced. The filter bag is treated by PP treatment agent and then coated with nanometer catalyst on the surface of the filter bag to form a compound filter bag. The purpose of dust removal and denitration is realized by a bag dust collector，and the process of flue gas short-range dust removal and denitration is realized Related Articles | Metrics

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REFRACTORIES & LIME    2024, 49 (1): 4-.   Abstract （57）            Knowledge map    Save Related Articles | Metrics