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2023 Vol. 0, No. 01
Published: 2022-12-28
1
Effect of fineness of Portland cement on hydration process and mechanical properties
YAN Peiyu, et al.
2023 Vol. 0 (01): 1- [
Abstract
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101
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6
Development status and prospect of Chinese cement industry
Hot!
TIAN Guiping, et al.
2023 Vol. 0 (01): 6- [
Abstract
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141
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13
Carbon emission accounting of sulphoaluminate cement
Hot!
SHANG Chunjing, et al.
2023 Vol. 0 (01): 13- [
Abstract
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139
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18
Case analysis of SCR denitrification catalyst technology and engineering application at low temperature
Hot!
SHENG Bin, et al.
2023 Vol. 0 (01): 18- [
Abstract
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84
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23
Application effect analysis of SCR denitrification technology in clinker production line of cement plant
MA Yahui, et al.
2023 Vol. 0 (01): 23- [
Abstract
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127
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25
Solution to corrosion problem of bag dust collector and flue gas pipe in cement kiln end of cement plant
YE Ming, et al.
2023 Vol. 0 (01): 25- [
Abstract
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86
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28
Analysis on reducing NOx emission test from drying heat source of slag vertical mill
ZHANG Siqiang
2023 Vol. 0 (01): 28- [
Abstract
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112
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30
Study on morphology and leaching content of heavy metals in co-processing of solid waste in cement kiln
GE Zhimeng, et al.
DOI: 10.13739/j.cnki.cn11-1899/tq.2023.01.008
The cement rotary kiln co-processing technique is accepted as an effective way to realize the reduction, harmlessness and resource utilization of solid waste. In this paper, the total amount, morphology analysis and leaching content of heavy metals in solid wastes (fly ash, copper slag, sulfuric acid slag and mixed sludge) and clinker of four production lines of cement kiln co-processing fly ash, copper slag, sulfuric acid slag and mixed sludge were determined. The determinate results showed that the total content of heavy metals in solid waste was very high (e.g. the content of chromium in the mixed sludge even reached 1.8×104 mg/kg), which may cause environment contamination if without proper treatment and stored or discharged directly. In this paper, the speciation analysis of heavy metals (As, Cr, Cd, Cu, Mn, Ni, Pb, Zn) in solid wastes and clinker were determined by means of BCR sequential extraction procedure, which using the independent invented sequential extraction device. The analysis results showed that the heavy metal forms in solid waste were mainly weak acid extractable and reducible. After calcination in cement kiln, the heavy metal forms in clinker were mainly residual, indicating that the significant fixation effect. In the experiment, the standard method was used to maintain the cement mortar test block, and the cured test block was extracted with the reference cement. The results showed that the risk of heavy metals in cement products produced by cement kiln co-processing solid waste migrating to the environment was low under the existing solid waste addition.
2023 Vol. 0 (01): 30- [
Abstract
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84
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36
Effect of co-processing solid hazardous waste on enrichment of chlor-alkali cycle
GE Nannan, et al.
2023 Vol. 0 (01): 36- [
Abstract
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194
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39
Upgrading measures of 5 000 t/d production line
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ZHENG Zhanfeng
2023 Vol. 0 (01): 39- [
Abstract
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100
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42
Discussion on problem of distortion of clinker capacity utilization rate
DING Meirong, et al.
2023 Vol. 0 (01): 42- [
Abstract
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102
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45
Discussion on problem of distortion of clinker capacity utilization rate
LI Jianhui, et al.
2023 Vol. 0 (01): 45- [
Abstract
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200
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48
Analysis and treatment of abnormal damage of refractory brick in kiln
WAN Tianjing, et al.
2023 Vol. 0 (01): 48- [
Abstract
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96
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50
Application of a new powder grinding aids in cement production
CUI Wengang, et al.
2023 Vol. 0 (01): 50- [
Abstract
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92
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54
Optimization and application of cement roller combined grinding system to increase production and reduce consumption
KANG Yu
2023 Vol. 0 (01): 54- [
Abstract
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111
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58
Application of roller press in technical reform of raw material grinding
ZHONG Ming, et al.
2023 Vol. 0 (01): 58- [
Abstract
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131
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60
Optimization of flue gas pipeline and internal flow characteristics based on CFD technology
YIN Cheng, et al.
2023 Vol. 0 (01): 60- [
Abstract
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115
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64
Vibration analysis and solution of SP boiler in cement kiln
XU Xiaoming, et al.
2023 Vol. 0 (01): 64- [
Abstract
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114
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66
Installation and application of Xoptix online particle size analyzer
LIU Yanfei, et al.
2023 Vol. 0 (01): 66- [
Abstract
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68
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69
Application of permanent magnet motor drive system in roller press
GAO Hongli, et al.
2023 Vol. 0 (01): 69- [
Abstract
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171
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72
Technical transformation and application of pulverized coal scale for feeding fluctuation
LU Haipeng
2023 Vol. 0 (01): 72- [
Abstract
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85
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74
Transformation of seal structure of rotary kiln head
LIU Xin, et al.
2023 Vol. 0 (01): 74- [
Abstract
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84
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76
Analysis and solution of clogging overflow at discharge port of belt conveyor
LIN Haufeng, et al.
2023 Vol. 0 (01): 76- [
Abstract
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180
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78
Sealing improvement of large fan bearing block in cement production line
ZHANG Yingjie, et al.
2023 Vol. 0 (01): 78- [
Abstract
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119
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