Experimental Study on Copper Oxide Ore from Fuxin

2011 ◽  
Vol 361-363 ◽  
pp. 259-262
Author(s):  
Ming Yu Li ◽  
Rui Chen Ren ◽  
Tian Yu Guo ◽  
Tie Li
Keyword(s):  
Experimental Study ◽  
Copper Oxide ◽  
Ammonium Sulfate ◽  
Sodium Silicate ◽  
Particle Distribution ◽  
Sodium Sulfide ◽  
Chemical Compositions ◽  
Distribution Characteristics ◽  
Copper Ore ◽  
Mineral Compositions

chemical compositions, mineral compositions, mosaic relationship, particle distribution characteristics are identified by mineralogy research on oxidization copper ore from Fuxin. Flotation conditions and closed-circuit process is carried out, it is adopted that adding sodium sulfide for sulfiding and ammonium sulfate for activating, then adding sodium silicate and sodium hexametaphosphate as combined inhibitation to intensify inhibitating, a combined collector consisiting of hexyl xanthate and butylamine dithiophosphate was used to strengthen the collecting effect. Finally, a copper concentrate with a grade of 17.39 % and a recovery of 59.36 % can be obtained, meanwhile, the grade of associated silver is 297.8 g/t, the recovery is 55.96 %.

Sulfidisation Promotion Effect of Ammonium Sulfate on Flotation of Copper Oxide Ore

2012 ◽  
Vol 524-527 ◽  
pp. 1109-1114
Author(s):  
Dian Wen Liu ◽  
Jian Jun Fang ◽  
Xiao Lin Zhang ◽  
Shu Ming Wen ◽  
Zhi Cong Wei ◽  
...  
Keyword(s):  
Copper Oxide ◽  
Ammonium Sulfate ◽  
Sodium Sulfide ◽  
Pure Copper ◽  
Sem Images ◽  
Promotion Effect ◽  
Flotation Recovery ◽  
Oxide Minerals ◽  
Sulfide Ions

This paper presents the sulfidisation promotion effect of ammonium sulfate on the sulfidisation flotation of both malachite and copper oxide ores. Copper oxide ores are commonly difficult-to-float due to its molecular structure, and adding sodium sulfide as activator is necessary; however, its dosage to the flotation pulp must be strictly controlled, as it is also a powerful depressant for copper sulfide minerals, and will, if in excess, depress the activated copper oxide minerals. This depression will be alleviated while ammonium sulfate is added, as it accelerates the speed of sulfidisation, and alleviates excessive sulfide ions on the depression of copper oxide minerals. Ammonium sulfate, therefore, may be a sulfidisation promoter, and plays a role of sulfidisation promotion effect; it makes the coating of sodium sulfide on the ore surface more dense and stable, which is ready for xanthate adsorption on the surface of copper oxide minerals. The results of experiments show that the flotation recovery is increased 12.28% while ammonium sulfate is added in the presence of excessive sodium sulfide in the pulp, and the highest recovery is obtainable when the ammonium sulfate and sodium sulfide are in the same dosages. The sulfidisation promotion effect of ammonium sulfate is confirmed by pure copper oxide mineral flotation test and copper oxide ores flotation test, as well as by SEM images of floated malachite.

Flotation of Copper Oxide Minerals Using Ethylene Phosphate as Activators

2012 ◽  
Vol 581-582 ◽  
pp. 975-982
Author(s):  
Xiao Feng Yang ◽  
Quan Jun Liu ◽  
Rong Dong Deng
Keyword(s):  
Copper Oxide ◽  
Recovery Rate ◽  
Sodium Sulfide ◽  
The Other ◽  
Test Results ◽  
Copper Ore ◽  
Good Test ◽  
Activation Effect ◽  
Oxide Minerals

Studying on difficulty of copper oxide`s flotation, the activation of new pharmaceutical KLY refractory copper oxide ore achieves better test results than the other activator. The final recovery rate of copper ore is 83.99% and the copper grade of concentrate is 22.87%.Through the mechanism of the test shows that the improved ethylene phosphate plays a major role for the activation, which not only has strong chelation, good activation effect but also reduces the amount of sodium sulfide; moreover, it develops good test indicators.

scholarly journals Impact of the particle mixing state on the hygroscopicity of internally mixed sodium chloride-ammonium sulfate single droplets: A theoretical and experimental study

2021 ◽  
Author(s):  
Yeny A. Tobon ◽  
Danielle El Hajj ◽  
Samantha Seng ◽  
Ferdaous Bengrad ◽  
Myriam Moreau ◽  
...  
Keyword(s):  
Experimental Study ◽  
Sodium Chloride ◽  
Ammonium Sulfate ◽  
Atmospheric Transport ◽  
Sea Salt ◽  
Main Constituent ◽  
Sea Salt Aerosols ◽  
Particle Mixing ◽  
Secondary Aerosols ◽  
Single Droplets

Sodium chloride (NaCl) is the main constituent of sea-salt aerosols. During atmospheric transport, sea-salt aerosols can interact with gases and other particles including secondary aerosols containing ammonium sulfate ((NH4)2SO4). This...

Utilization of the By-Products for Simultaneous Purification of Sulfur Dioxide and Nitrogen Oxide in Bio-Trickling Process

2013 ◽  
Vol 779-780 ◽  
pp. 1220-1223
Author(s):  
Wen Bo Zhou ◽  
Ping Zou ◽  
Pei Shi Sun ◽  
Xiao Yi Bi ◽  
Yong Yang Mao ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Ammonium Nitrate ◽  
Ammonium Sulfate ◽  
Purification Process ◽  
Copper Ore ◽  
By Products

The potential of using the waste from simultaneous NOx and SO2 purification bio-trickling process to leach copper ore and to make fertilizer was investigated. It was found there were two main exhausted by-products in the purification process: the acidic liquid in desulfurization tower and the alkalescent liquid in denitrogenation tower. Through operation of leaching the oxide ore sample containing 2.58% copper by the acidic liquid, the effective grade of the metal to be extracted reached 28.37% by weight. With adding proportional dose of ammonia into the alkalescent liquid or the acidic liquid and going through evaporation and concentration, crystal products of ammonium sulfate and ammonium nitrate were generated, which can be used in fertilizer manufacturing.

Experimental Study of Floatation on Non-Independent Copper Oxide Ore from Jilin Province in China

2012 ◽  
Vol 581-582 ◽  
pp. 851-855
Author(s):  
Rong Dong Deng ◽  
Quan Jun Liu ◽  
Xiao Feng Yang ◽  
Ting Hu ◽  
Feng Hong Ye
Keyword(s):  
Copper Oxide ◽  
Copper Sulfide ◽  
Jilin Province ◽  
High Grade ◽  
High Recovery ◽  
Copper Ore ◽  
Sulfide Ore ◽  
Mineralogical Study ◽  
Oxide Minerals ◽  
Copper Sulfide Ore

Through the processing of mineralogical study on a copper ore from Jilin province in China, it found that the copper exist mostly with the form of chalcopyrite, and others exist with the form of copper oxide minerals which with complex ingredient. The copper oxide minerals are due to the altered of the edge of chalcopyrite, and have not formed the independent copper oxide ore. It belongs to unconventional hard-to-beneficiate copper ore. Coarse grinding fineness and bulk floatation was used to recover the copper oxide ore and copper sulfide ore by using amino double phosphoric acid and butylamine dithiophosphate as the collector. This process was similar to the carrier flotation and achieved an effective processing of the copper oxide ore and obtained a high-grade copper concentrate assaying 15.8% with a high recovery of 82.4%.

Acid Extracting Pectin from Guangyechu White Bast and Subsequent Ammonium Sulfate Pulping

2011 ◽  
Vol 236-238 ◽  
pp. 1301-1306
Author(s):  
Jie He ◽  
Bing Yue Liu
Keyword(s):  
Ammonium Sulfate ◽  
Pulp Yield ◽  
Chemical Compositions ◽  
Optimal Conditions ◽  
Treatment Stage

In this paper, the process of acid extracting pectin from Guangyechu white bast and subsequent ammonium sulfate pulping was optimized by condition test. Under optimal conditions, the pectin yield was 3.99%, the screened pulp yield was 52.61%, KMnO4 value was 9.84 and whiteness was 51.7%ISO. And chemical compositions of Guangyechu white bast in each treatment stage were compared and analyzed.

Experimental Study of Air Distribution Characteristics in Room of Stratum Ventilation under Two Kinds of Air Change Times

2013 ◽  
Vol 409-410 ◽  
pp. 668-672
Author(s):  
Yong Mei Xu ◽  
Jian Tang ◽  
Jun Han ◽  
Chu Qin Lin
Keyword(s):  
Experimental Study ◽  
Thermal Comfort ◽  
Experimental Studies ◽  
Air Distribution ◽  
Distribution Characteristics ◽  
Breathing Zone ◽  
Wind Speeds ◽  
Pollutant Concentrations ◽  
New Type ◽  
Better Than

Aimed at a new type of ventilation - stratum ventilation, air distributions at a breathing-zone in a model office were measured under kinds of air changes, the measure parameters in the experimental studies included temperatures, wind speeds and pollutant concentrations, based on which the thermal comfort at a breathing-zone were studied. Experimental results show that, the temperature, pollutant concentration and wind speeds in a breathing-zone under 5 times air changes are better than those under 6 times air changes. The calculating results of PMV and PPD indicate that the thermal comfort at a breathing-zone under 5 times air changes is better. The experimental study is instructive for the development of the ventilation.

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