Gold Mining: Proceedings of the International Conference on Gold Mining Technology, Beijing, China, 15-17 June 1993 |
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Page 164
... Cement Addition Plant Dry cement is separately transport- ed underground using a pneumatic cement transportation system . In a first stage , the cement is blown by clean dry low pressure compressed air from a surface silo through a ...
... Cement Addition Plant Dry cement is separately transport- ed underground using a pneumatic cement transportation system . In a first stage , the cement is blown by clean dry low pressure compressed air from a surface silo through a ...
Page 173
... cement as used in Pasminco Mines was obtained from Adelaide Brighton Cement Ltd .. The test materials and blended Portland cement were mixed at cement contents of 3 % , 6 % and 9 % on a total mass basis . Procedures for test specimen ...
... cement as used in Pasminco Mines was obtained from Adelaide Brighton Cement Ltd .. The test materials and blended Portland cement were mixed at cement contents of 3 % , 6 % and 9 % on a total mass basis . Procedures for test specimen ...
Page 175
... cement content 6 % 56 The effect of fines content is lessened with increasing cement content . The explanation of this appears to be that the fines simply fill the voids and hence improve cement distribution . To demonstrate this , some ...
... cement content 6 % 56 The effect of fines content is lessened with increasing cement content . The explanation of this appears to be that the fines simply fill the voids and hence improve cement distribution . To demonstrate this , some ...
Contents
Prospecting Criteria and DeepSeated Prognosis of Buried Ore in Jiapigou Gold Mining | 8 |
Update on Mining Activities on the Island of Hispaniola Dominican Republic and Haiti | 23 |
An Approach of the Geologic Genesis of Jinchanggouliang Gold Deposit Inner Mongolia | 42 |
Copyright | |
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Common terms and phrases
According alteration angle application average backfill belt blasting block body capacity carried cement China compressive concentration cost depth direction distribution district dredge drift drilling economic effect efficiency equipment exploration fault Figure flocculation formed fracture geological gold deposits gold mines grade ground higher holes important improved increase indices intensity length less load located loss lower major mass material measures mechanized method mill mineralization mining method occurred operation orebody period pillar placer present problems production prospecting Province quartz raise range ratio recovery reduced rock roof samples screen sericitic shaft shown shrinkage side slice sluice stage stope strength stress strike stripping structure surface Table tailing thickness tion trend upper various vein ventilation vertical wall zone