Feb 24, 2004· Method of recovering sulfur from minerals and other sulfurcontaining compounds . United States Patent . Abstract: A sulfurous compound such as a sulfurrich "float" (concentrate) obtained by flotation of the residue from the leaching of a zinc concentrate is heated at a temperature not lower than the melting point of sulfur but ...

Many plant species require acid soil conditions to thrive. Throughout Ohio and many other parts of the Midwest surface soils are neutral to slightly alkaline. Elemental sulfur can be applied as a soil amendment to decrease the pH or acidify such soils. Due to the cost, the application of sulfur to acidify soils is more practical for horticultural crops than agronomic crops.

Acid Mine Drainage Prediction compares acid rock drainage factors of waste rock piles and tailings impoundments. In examining this table, it is important to note that diffusion of oxygen into water is slow and, therefore, oxidation of iron sulfide is inhibited until the water level drops, which can occur periodically or seasonally in some cases.

We have investigated whether by manipulating microbial communities in tailings (inoculating with iron and sulfurreducing acidophilic bacteria and phototrophic acidophilic microalgae) it is possible to mitigate the impact of the acidgenerating and metalmobilizing chemolithotrophic prokaryotes that are indigenous to tailing deposits.

There is % cobalt and % sulfur in the cobaltbearing V–Ti tailings in the Panxi Region, with the metal sulfide minerals mainly including FeS2, Fe1−xS, Co3S4, and (Fe,Co)S2, and the gangue minerals mainly including aluminosilicate minerals. The flotation process was used to recover cobalt and sulfur in the cobaltbearing Vndash;Ti tailings.

results Section and Table ), Fe and S are also present at greater than 5 times crustal abundance due to the pyrite content. Table shows the degree to which the 9 previously indicated parameters exceed crustal abundance. The concentrations of Bi in the cleaner tailings should be confirmed in .

Sulfur has applications as a fungicide, fumigant, and in the making of fertilizers. It is used to make sulfuric acid. Sulfur is used in the making of several types of paper and as a bleaching agent. Elemental sulfur is used as an electrical insulator. The organic compounds of sulfur have many uses. Sulfur is an element that is essential for life.

article{osti_, title = {An efficient process for recovery of fine coal from tailings of coal washing plants}, author = {Cicek, T. and Cocen, I. and Engin, and Cengizler, H.}, abstractNote = {Gravity concentration of hard lignites using conventional jigs and heavy media separation equipment is prone to produce coalrich fine tailings.

Sulfur, nonmetallic chemical element, one of the most reactive of the elements. Pure sulfur is a tasteless, odorless, brittle solid that is pale yellow in color, a poor conductor of electricity, and insoluble in water. It reacts with all metals except gold and platinum, forming sulfides.

acidbase accounting indicated less than 9% total sulf ur present in the tailings materials (Table 3). In site 4, sulfur values were consistently higher in all layers compared with most horizons in the other three sites. Site 4 also had the highest levels of pyritic sulfur (Table 4). The presence of organic sulfur possibly was a result of ...

tailing pile. All samples were taken at depths of 20 cm or more to avoid surface contamination by blowing dust from other regions of the tailing site. Relevant chemical properties are summarized in Table 1. In addition, plantavailable metals, as determined by analysis of DTPA extracts (31), were previously

CONTROL OF ACID ROCK DRAINAGE FROM MINE TAILINGS THROUGH THE ADDITION OF DISSOLVED ORGANIC CARBON by Paul John Sturman A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Engineering MONTANA STATE UNIVERSITY Bozeman, Montana November 2004

Appendix 3 Tailings Disposal Facility Management Plan, provides information on the management objectives, operation, and monitoring s and inspection requirements for the Greens Creek Mine Tailings Disposal Facility (TDF). Table 1. RECORD OF CHANGES AND .

A process for the recovery of copper, molybdenum, gold and elemental sulfur in tailings from hydrometallurgical processing of copper sulfide ores, the process comprising concentrating the tailings containing elemental sulfur and copper, gold and molybdenum to a small bulk volume by froth flotation to reject barren gangue including jarosite, if present, and other impurities, separating the ...

Sulfur flotation process is a typical industry process with complex dynamics. For a sulfur flotation cell, the structure of the system model could be derived using firstprinciples and reaction kinetics. However, the model parameters cannot be obtained under certain working conditions. In this paper, by using adaptive dynamic programming (ADP), we establish a datadriven optimal control ...

With increasing aridity and decreasing pyrite content of the tailings, the sulfur speciation in the unsaturated oxidation zones showed a trend from dominantly Fe(III) oxyhydroxide fixed sulfate (, jarosite and schwertmannite) in Piuquenes toward increasing presence of watersoluble sulfate at Cauquenes and Salvador No. 1.

iron ores with a high content of impurities, such as sulfur, have been processed [2]. Pyrrhotite (Fe1 xS) is a kind of common sulfide which exists in magnetite ore as an associated mineral with little industrial value. The contamination of sulfur emanating from pyrrhotite in magnetite concentrates has been a problem in iron ore smelting process.

several tailings having a variety of chemical compositions. The MEND samples' relatively common particle size reduced the factors in acid production to three: percentage sulfur, neutralization potential, and leaching method. Materials and Methods The samples showed much variation in chemistry (Table 2). of interest is the ratio of acid

Dec 02, 1980· (a) removing elemental sulfur from the tailings by volatilizing the sulfur; (b) recovering copper from the residue from the sulfur volatilization of step (a) by leaching the sulfur depleted residue with ferric chloride to selectively solubilize copper; and (c) recovering molybdenum from the residue from the ferric chloride leach of step (b). 9.

the water table, but remain elevated in deeper groundwater (33 g/L Fe and 55 g/L SO 4). At the border between the tailings and Woods Lake concentrations of metals and SO 4 decrease. This decrease coincides with significant sulfur isotope fractionation with depth (δ34SSO 4 ‰), suggesting that the decrease in concentrations is due to ...

Assessing the Biogeochemical Development of Oxygen and Sulfur in Oil Sands Fluid Fine Tailings in Batch Microcosms by Michael Chen A Thesis Submitted to the Faculty of Graduate Studies through the Department of Environmental Sciences Great Lakes Institute for Environmental Research (GLIER) in Partial Fulfillment of the Requirements for the

Application of Composite Powders Recycled from Graphite Tailings in StyreneButadiene Rubber YUN HAI,1 LIBING LIAO,1,3 GUOCHENG LV,1,4 FAXIANG QIN,2 LEFU MEI,1 and YAOZU WEI1 1.—School of Material Sciences and Technology, China University of Geosciences, Beijing 10083,