Developments in Selective Flotation of Complex Copper-Lead-Zinc

1995 ◽  
Vol 15 (1-4) ◽  
pp. 47-47 ◽  
Author(s):  
P.I. ECROLA ◽  
V. PALOAARI
Keyword(s):  
Selective Flotation ◽  
Lead Zinc ◽  
Complex Copper ◽  
Copper Lead

USE OF NON-TOXIC DEPRESSANTS IN THE SELECTIVE FLOTATION OF COPPER-LEAD-ZINC ORES

2008 ◽  
Vol 47 (2) ◽  
pp. 111-118 ◽  
Author(s):  
A. GÜL ◽  
A.E. YÜCE ◽  
A.A. SIRKECI ◽  
M. ÖZER
Keyword(s):  
Selective Flotation ◽  
Lead Zinc ◽  
Copper Lead

Study on Comprehensive Utilizations of Certain Complex Paragenic Tin Polymetallic Ore

2013 ◽  
Vol 690-693 ◽  
pp. 3521-3528
Author(s):  
Xiao Qing Chen ◽  
Jin Zhong Yang ◽  
Yi Lin Mao ◽  
Wei Ping Yan ◽  
Cheng Xiu Li
Keyword(s):  
Gravity Concentration ◽  
Recovery Rates ◽  
Combined Procedure ◽  
Selective Flotation ◽  
Fine Grained ◽  
Metallic Mineral ◽  
Lead Zinc ◽  
Test Flow ◽  
Polymetallic Ore ◽  
Copper Lead

The ore compositions in a certain newly proven tin polymetallic ore are complicated, closely mosaic between different minerals and fine-grained disseminated. The main compositions in the ore exist mostly in the form of sulfide, and are associated partly with oxidized ore. It is difficult to separate each metallic mineral to accept qualified concentrates and ensure higher recovery rates. Aiming at characteristics and occurrences of the ore, the project emphatically selects and contrasts the test flow of selective flotation, partial bulk flotation and flotation-and-gravity-concentration, and uses effective reagent system to control the impurity contents in every concentrate, and strengthen the recovery of associated silver at the same time of producing major metallic minerals. Metallic minerals, including copper, lead, zinc, tin, sulfur and silver, can be fully recovered by adopting combined procedure of selective flotation and gravity concentration, and other associated components in the ore are also recovered comprehensively, so the technology indexes of various products obtained are excellent.

Influence of Feeding Dehydrated Poultry Waste on Composition and Organoleptic Quality of Milk1

1977 ◽  
Vol 40 (1) ◽  
pp. 29-31 ◽  
Author(s):  
J. C. BRUHN ◽  
G. D. REIF ◽  
H. TOONE ◽  
J. H. EVANS
Keyword(s):  
Dairy Cows ◽  
Milk Quality ◽  
Poultry Waste ◽  
Quality Factors ◽  
Lactating Dairy Cows ◽  
Period 2 ◽  
Lead Zinc ◽  
Copper Lead ◽  
Composite Samples

A double reversal trial with three, 4-week periods was used to determine the effect on milk quality of feeding dehydrated poultry waste to lactating dairy cows. Fifteen cows were fed a control ration for 4 weeks (Period 1), followed by an experimental ration containing dehydrated poultry waste for 4 weeks (Period 2), and then by the control ration for 4 weeks (Period 3). Milk was collected daily and scored by five judges using the ADSA milk flavor scoring guide. Milk compsition (fat, protein, lactose, and solids-not-fat) was determined on alternate days. During Periods 2 and 3 weekly composite samples were collected to determine concentrations of cadmium, copper, lead, zinc, and tocopherol. No significant differences were found in any of the milk quality factors studied.

Distribution and significance of copper, lead, zinc and cadmium in the Corio Bay ecosystem

1981 ◽  
Vol 32 (2) ◽  
pp. 151 ◽  
Author(s):  
JD Smith ◽  
ECV Butler ◽  
BR Grant ◽  
GW Little ◽  
N Millis ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Nutrient Cycling ◽  
Mytilus Edulis ◽  
Water Exchange ◽  
Dry Weight ◽  
Weight Basis ◽  
Threshold Levels ◽  
Lead Zinc ◽  
Significant Interference ◽  
Copper Lead

Levels of copper, lead, zinc and cadmium in sediments, waters and mussels (Mytilus edulis) from Corio Bay (Vic.) were measured on two occasions in 1977. The bay has restricted water exchange with Port Phillip Bay and is known to have received a major input of cadmium. The respective concentrations of copper, lead, zinc and cadmium in the sediments were 2-50,2-2l0,4-398 and up to 12.6 �g/g; in the unfiltered waters, I .5-25, <0.4-11, 3.9-67 and 0.11-5.6 �g/l; and in the mussels, 4.8-21. 1.2-9.7, 105-110 and 9.8-53 �g/g on a dry weight basis. The observed levels of heavy metals are compared with threshold levels reported in the literature as causing significant interference with growth of phytoplankton and nutrient cycling by bacterial processes.

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