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2019 Vol. 0, No. 1
Published: 2018-12-29
4
Technological approaches of low-carbon transition of China cement industry: simultaneously comment on “cement industry low-carbon transition technology roadmap” published by United Nations
Hot!
GAO Changming
2019 Vol. 0 (1): 4- [
Abstract
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477
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9
Effect of water solubility Cr(Ⅵ) in cement used in grouting engineering on underground water
HUANG Xiaoqian, et al.
Cement was widely used in grouting engineering for displaying good combination properties, but it also comprises Cr(Ⅵ), which could be directly brought into surface water and groundwater via constructions. This paper analyzed the current content of Cr(Ⅵ) in cement and focused on a large reservoir’s curtain grouting project to study the groundwater influenced by cement grouting. The results revealed that Cr(Ⅵ) at amount of 2.39 mg/kg in cement would cause the soluble Cr(Ⅵ) of groundwater out of the standard for two months. Cement contained Cr(Ⅵ) was a continuous water soluble Cr(Ⅵ) pollutant in the process of grouting and intermittent pollutant after hardening. It would increase the risk of serious pollution to the groundwater as the main material for a large scale grouting project.
2019 Vol. 0 (1): 9- [
Abstract
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266
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13
New dry process cement clinker grindability conspectus
Hot!
LUO Fan
Base on abroad research ideas, the contrast test of new dry process cement clinker and proportioning were actual measured. The results indicated that the C2S content was main influence factor of clinker grindability, the other mineral phase, liquid phase and density had no significant effects. The grindability of rapid cooling clinker would be better than that of slow cooling, the effect of cement grinding process depended on grindability of clinker and raw material. Compressed finished grinding and combined grinding process could ignore all influence factors on grindability, grindability test could save energy over 30%~60%.
2019 Vol. 0 (1): 13- [
Abstract
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457
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4
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19
Co-processing technology of municipal solid waste by cement kilns in Handan Jinyu Taihang cement plant
FENG Junling, et al.
2019 Vol. 0 (1): 19- [
Abstract
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404
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0
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21
Application of pneumatic transmission technology in co-processing fly ash with cement kiln
LI Shuhai, et al.
2019 Vol. 0 (1): 21- [
Abstract
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311
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185
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24
Process optimization and technology integration of high percentage of magnesium slag used in new dry process cement production
GAO Jianrong, et al.
The property of raw materials and feasibility of magnesium slag applied in raw material was analyzed, and more reasonable proportion scheme of two-high and one-middle is proposed, namely high KH above 0.95, high SM above 2.7, and middle IM 1.55. Delicacy production plan was applied, problems in production were solved, relevant equipments were improved, such as preheater, calciner, kiln end feeding system, tertiary air valve, pulverized coal scale and raw meal scale, etc, and the overall technical integration and optimization scheme was formed. After production practice, when the content of magnesium slag was 20%, the 28 days flexural strength and compressive strength of clinker were increased by 1.0 MPa and 4.3 MPa respectively, and the production of raw mill and rotary kiln were increased by 22.4 t/h and 11.25 t/h, which yielded obvious benefits.
2019 Vol. 0 (1): 24- [
Abstract
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279
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29
Renovation of new dry process production line to produce G-grade oil-well cement
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YANG Changjun
2019 Vol. 0 (1): 29- [
Abstract
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300
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2
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34
Analysis and treatment of cement strength reduction in silo
LI Chengguang
2019 Vol. 0 (1): 34- [
Abstract
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427
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6
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38
Reducing energy consumption and output increasing of two roller press with one mill system instead of semi-finishing grinding system
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MO Ertian
2019 Vol. 0 (1): 38- [
Abstract
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339
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12
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41
Problems of raw meal finished grinding system with roller press at initial stage of production and its treatment
ZHANG Yanwei
2019 Vol. 0 (1): 41- [
Abstract
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258
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2
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43
Treatment of abnormal vibration of cement HPGR motor
FU Xinxi, et al.
2019 Vol. 0 (1): 43- [
Abstract
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245
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(2165 KB) (
0
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45
Anti-explosion management measure of dry carbide slag silo
LI Hongrong, et al
2019 Vol. 0 (1): 45- [
Abstract
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313
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(1962 KB) (
1
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46
Experience of JS150-B reducer repaired by ourselves
JI Xin, et al
2019 Vol. 0 (1): 46- [
Abstract
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299
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0
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49
Roller shell welding experience of vertical mill
HAN Rui
2019 Vol. 0 (1): 49- [
Abstract
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235
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0
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50
Test and analysis of swelling-shrinkage characteristics of coupling bore after heating
LI Chuansong
2019 Vol. 0 (1): 50- [
Abstract
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278
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0
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52
Discussion on some misunderstanding of cement industry at present (Ⅳ): discussion on handling of cement quality complaints and development trend and acceptance regulations of European and American standards
DING Meirong, et al.
2019 Vol. 0 (1): 52- [
Abstract
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245
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1
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59
Discussion on coal sample preparation for general analysis in cement plant laboratory
ZHOU Bin
2019 Vol. 0 (1): 59- [
Abstract
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252
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(1748 KB) (
1
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62
Optimization control system of cement production
ZHANG Li
2019 Vol. 0 (1): 62- [
Abstract
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333
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1
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65
SCR fault analysis and treatment of middle voltage frequency converter’s rectifier part
LIANG Hong
2019 Vol. 0 (1): 65- [
Abstract
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381
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0
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68
Application of Intelligent converter technique in transport process of cement production line
SHAO Zhongwei, et al
2019 Vol. 0 (1): 68- [
Abstract
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300
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0
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70
Treatment of turning problem of raw mill roller press
ZHU Yanpeng, et al.
2019 Vol. 0 (1): 70- [
Abstract
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220
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(1506 KB) (
0
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71
Simple and cheap sealing method for feed inlet of vertical mill
LUAN Jiangtao, et al.
2019 Vol. 0 (1): 71- [
Abstract
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336
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(2121 KB) (
1
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73
Automatic control in energy conservation design of recirculating cooling water system
YANG Jiqing, et al.
2019 Vol. 0 (1): 73- [
Abstract
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283
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Copyright © Editorial Board of Journal of Cement
Supported by:
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