4883532 Sonic method for facilitating the extraction of minerals from ore in a leachant

1990 ◽  
Vol 3 (5) ◽  
pp. ii
Keyword(s):  
1961 ◽  
Vol 13 (2) ◽  
Author(s):  
M. Grosmangin ◽  
P.P. Kokesh ◽  
P. Majani
Keyword(s):  

Refractories ◽  
1987 ◽  
Vol 28 (7-8) ◽  
pp. 456-460
Author(s):  
L. I. Nerubashchenko ◽  
N. R. Buryak ◽  
Zh. I. Panova ◽  
Yu. A. Pel'tek ◽  
N. V. Matsneva ◽  
...  
Keyword(s):  

2014 ◽  
Vol 638-640 ◽  
pp. 904-907 ◽  
Author(s):  
Feng Zhan Cui ◽  
Hua Jun Xue ◽  
Tian Yu He ◽  
Tao Tao Li ◽  
Jin Jing Zuo ◽  
...  

To control the stability of deep well broken surrounding rock, single-hole sonic method is used to test the loose circle of-1180 east-rock main roadway and its damage range. The study indicates the loose circle is about 1.8 ~ 2.2 m, which is typical large loose circle. And its button is slightly larger than two sides’, right side slightly larger than left. The roadway rock has some engineering features of soft rock. The broken and expand deformation of loose circle does large, difficult to support. Combined support is usually used in this rock condition.


Refractories ◽  
1963 ◽  
Vol 4 (9-10) ◽  
pp. 503-506
Author(s):  
P. A. Lande ◽  
A. I. Varvarina ◽  
Z. N. Ivanova
Keyword(s):  

Refractories ◽  
1966 ◽  
Vol 7 (3-4) ◽  
pp. 137-140
Author(s):  
M. N. Bluvshtein ◽  
Z. K. Zykova ◽  
Yu. I. Khlebnikova ◽  
T. A. Reingardt ◽  
T. V. Malikova ◽  
...  
Keyword(s):  

Nature ◽  
1930 ◽  
Vol 126 (3181) ◽  
pp. 602-603 ◽  
Author(s):  
R. W. BOYLE ◽  
D. FROMAN

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