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61 Polysulfide leaching has such advantages as elimination of the influence of CaS, speedy gold leaching and nontoalcity of reagents.

62 A study for leaching of a low grade and difficult to separate copper ore was performed by using ammoniacal pressure leaching method.

63 The arsenolite cinders were treated by the processes of oxidizing roasting-pyrolusite pulp absorption, magnetizing roasting-magnetic separation and acid leaching.

64 Using biology leaching for normal college students can train their modernized consciousness.

65 The rates of leaching deliquescence and agglomeration of the tested fertilizers are also examined.

66 The column leaching experiments of the primary ore of copper sulfide with thermoacidophile, KY-2 strain, are conducted.

67 Indium was recycled from a certain converter slag containing 0.4% indium through a method of thermal activation leaching in sulfuric acid solution.

68 The new technology has advantages of non-acid leaching process, high purity of product, simple production process, high ratio of raw material utilization and low three wastes,(http://sentencedict.com/leaching.html) etc.

69 The catalysis - acid leaching process of copper bismuth sulphide dregs is introduced.

70 For this, hydrogen peroxide and cupferron were used as screening agent and agent for removing impurities in the test of purifying this vanadium-containing acid leaching solution.

71 Generally, oxygen or hydrogen peroxide, as leaching oxidant, and sodium chloride solution , as elutriant of saturated resin, have been applied to in-situ leach of uranium so far.

72 The leaching solution was purified by ion exchange, and then ammonium metavanadate was precipitated. A qualified product V 2O 5 was obtained by calcining ammonium metavanadate .

73 Experiments on preparation of cupric sulfate from a copper sulfide ore by microbiological leaching solvent extraction crystallization have been carried.

74 The high-purity manganese carbonate is prepared by leaching manganese with sulfur dioxide, removing impurities, carbonating and crystallizing from Xiangtan's low-grade manganese ore.

75 The simulated leaching tests showed no significant effects of different chelates on the content of mercury in leachate and the residual soil.

76 The sewage soil disposal experiment is made mainly by using biochemical process of looser permeable soil horizon, and secondly by leaching and adsorption.

77 The effect of acid leaching conditions on leaching rate of copper and zinc in process for production of copper and zinc sulfates from copper smelting dust was studied in this paper.

78 In this PaPer, the gold leaching from complex sulfide-bearing gold concentrate by cyanide process was studied systematically.

79 In this article, the process and numerical model of copper oxide ore leaching are introduced.

80 The in - situ underground leaching of low - grade copper ore is a new technology of extraction ore resources.

81 The development ofthe high - temperature high - pressure leaching technology of zinc sulphide concentrate were introduced.

82 The effects of microwave roasting pretreatment on leaching behavior of diaspore ore were investigated.

83 To construct a more effective mixing leaching, it is of great significance to understand the change of community system between the process of ore mineral extraction.

84 The bio - leaching system involves polyphase interfacial interactions, such as microorganism - mineral, mineral - mineral, microorganism - solution, ...

85 The experimental process for recovery molybdenum and ammonium chloride from mother liquors of ammonium molybdate and ammonia leaching molybdic acid using HT adsorbents is presented.

86 Insitu leaching mining of deeply buried polyhalite can alleviate severe shortages of potash resources in China.

87 The technological key to leaching mining of underground polyhalite is the extraction of effective constitutes from polyhalite.

88 The mechanical strength of calcined briquet can meet the needs of percolation leaching operation.

89 The reductive extraction method of bastnasite baked by sodium carbonate and low acidity HCI leaching for making rare earth chloride is reported.

90 Leaching of copper from chalcocite with acidic acetonitrilecopper sulphate system was studied.