Results 1 to 10 of about 5,568,677 (301)
Research Progress on Reductive Leaching Technology of Iron, Cobalt and Manganese Minerals
Kuangchan zonghe liyong[Objective] In response to the problem that high-valent minerals of variable valence metals such as iron, cobalt and manganese are difficult to leach directly and the leaching efficiency is low in the hydrometallurgical process, a green and efficient ...
Xuehong QIU +4 more
doaj +1 more source
Kuangchan zonghe liyongArsenopyrite is a common gold-bearing mineral, and the presence of arsenic leads to difficulties in gold recovery. In this paper, the effects of leaching time, NaOH concentration, temperature and potassium permanganate concentration on the arsenic ...
Kai JIN +4 more
doaj +1 more source
OPTIMAL SOLUTION LEACHING RATES WITH A DEFICIT OF IRRIGATION WATER
JOURNAL OF AGRO PROCESSING, 2020 Aliakbar Khojiev, Shakhnoza Khojieva
openaire +1 more source
Some of the next articles are maybe not open access.
Chalcopyrite leaching: The rate controlling factors
Geochimica et Cosmochimica Acta, 2010Abstract The processes that determine the rate of chalcopyrite leaching are central to understanding how chalcopyrite (CuFeS2) behaves under the environmentally adverse conditions of acid rock drainage. To this end the effect of the acid anion on chalcopyrite leach rates using a variety of acidic media (H2SO4, HClO4, HCl and H2SO4 with 0.25 M NaCl ...
J. Li +4 more
openaire +1 more source
Prediction of leaching rate in heap leaching process by grey dynamic model GDM(1,1)
Applied Mathematics and Mechanics, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Jin-Zhi, Wu, Ai-Xiang
openaire +1 more source
Radiation effects and the leach rates of vitrified radioactive waste
Nature, 1982There is much concern that long-lived radioactive elements incorporated in glasses for the disposal of highly active nuclear waste might eventually return to the environment. The most important mechanism begins with leaching of the glass by groundwater and a leach rate, usually based on laboratory tests of simulated vitrified radioactive waste, has ...
W G, Burns +4 more
openaire +2 more sources
Research of Al and Fe Leaching Rate in the Process of Slag Leaching by Hydrochloric Acid
Applied Mechanics and Materials, 2014Smelting slag from mineral process and blast furnace process to vanadium titanium magnetite is a kind of precious secondary resource in which TiO2 content is higher than 20%. Taking titanium-bearing blast furnace slag in Panzhihua region as research object, this paper analyzes four factors that affect the leaching rate of Al and Fe.
Guang Qiang Mang, Ming Cheng
openaire +1 more source
The Modeling and Control of Leaching Rate in Nickel Stir Leaching Process of Sulfuric Acid
Advanced Materials Research, 2012Leaching rate is one of the key parameters in the nickel stir leaching process of sulfuric acid and it is hard to online measure directly due to a lot of uncertain facts. In this paper, the prediction model of nickel leaching rate is established by least squares identification method.
Qiang Li +3 more
openaire +1 more source
A Mechanically Controlled Variable Rate Leaching Device
Soil Science Society of America Journal, 1977Abstract Twenty‐four leaching tubes attached to 60‐ml plastic syringes are mounted on the periphery of three vertically aligned slotted discs 45 cm in diameter. The plungers are withdrawn at a controlled rate by a variable speed screw jack that separates the two lower discs holding the plungers and syringe barrels, respectively ...
George G. S. Holmgren +2 more
openaire +1 more source
The measurement of leach rates: A review
Nuclear and Chemical Waste Management, 1982Abstract A historical perspective of the techniques that can be used to measure the leach rate of radioactive waste forms is presented. The achievement of leach rates that are as low as possible has been an important goal ever since the development of solidification processes for liquid radioactive wastes began in the 1950's.
openaire +1 more source