The present investigation of potential metric techniques in the determination of the corrosion rate of AISI 304 stainless steel, has been possible through the use of the potentiostat that has a measurement range of 0.005 mA to 1,000 mA with responses in the potentials of 0.1 at 100 mV. The corrosion rates of AISI 304 stainless steel have been determined: medium: 3.56% C.R. sodium chloride solution. (mpy) = 1.72 medium: synthetic sea water C.R. (mpy) = 1.28. The study of corrosion rate measurement in engineering material, using the potentiostat has proven to be fast and reliable.

The present investigation of potential metric techniques in the determination of the corrosion rate of AISI 304 stainless steel, has been possible through the use of the potentiostat that has a measurement range of 0.005 mA to 1,000 mA with responses in the potentials of 0.1 at 100 mV. The corrosion rates of AISI 304 stainless steel have been determined: medium: 3.56% C.R. sodium chloride solution. (mpy) = 1.72 medium: synthetic sea water C.R. (mpy) = 1.28. The study of corrosion rate measurement in engineering material, using the potentiostat has proven to be fast and reliable.

Column flotation is particularly attractive for applications involving multiple cleaning stages in conventional cells and for complex minerals that have selectivity problems, substantially raising the grade of the concentrate (2-4%) and higher recovery (2-3%) , with a single cleaning stage, this equipment adapting very well to computer control. Its acceptance in the mining industry is increasing due to multiple advantages including lower cost of installation and operation, less space occupation, substantial decrease in energy consumption, mainly because it does not have a mechanical agitation system, and less consumption of reagents.

Column flotation is particularly attractive for applications involving multiple cleaning stages in conventional cells and for complex minerals that have selectivity problems, substantially raising the grade of the concentrate (2-4%) and higher recovery (2-3%) , with a single cleaning stage, this equipment adapting very well to computer control. Its acceptance in the mining industry is increasing due to multiple advantages including lower cost of installation and operation, less space occupation, substantial decrease in energy consumption, mainly because it does not have a mechanical agitation system, and less consumption of reagents.

The ore is complex and presents abundant content of sulphurs: pyrite, arsenopyrite and pyrrhotite, also in few proportion: chalcopyrite, sphalerite and probably sulfhosals that add: copper, silver, arsenic and antimony. Free gold is not appreciated in the obtained results, the major content of gold is in tails of flotation Cu-Ag, constituted by sulphurs of iron, as a non metallic residue prevails the quartz, coal and the insolubles, it is quite strong and naturally very acid, pH:5.3. It is possible to obtain a concentrate of flotation Cu-Ag, with As and Sb like pollutants and around 80% of the total gold stays in tails, to which we effect a direct cyanidation having variant like pH and granulometry, it has not been possible to leach more than 11 % of the gold contained in tails that gives 3.2 grams Au/TM, considering the current prices it has an approximate value 100 US $ Ton.

The ore is complex and presents abundant content of sulphurs: pyrite, arsenopyrite and pyrrhotite, also in few proportion: chalcopyrite, sphalerite and probably sulfhosals that add: copper, silver, arsenic and antimony. Free gold is not appreciated in the obtained results, the major content of gold is in tails of flotation Cu-Ag, constituted by sulphurs of iron, as a non metallic residue prevails the quartz, coal and the insolubles, it is quite strong and naturally very acid, pH:5.3. It is possible to obtain a concentrate of flotation Cu-Ag, with As and Sb like pollutants and around 80% of the total gold stays in tails, to which we effect a direct cyanidation having variant like pH and granulometry, it has not been possible to leach more than 11 % of the gold contained in tails that gives 3.2 grams Au/TM, considering the current prices it has an approximate value 100 US $ Ton.

Fluorite (F2Ca) is an ore that has multiple aplications, the main ones are: manufacture of fluorhidric acid, steel iron industry, welding and ornamental purposes. This ore belongs to the central zone of Peru and besides fluorite, it has metallic values of lead, silver and zinc, these respond well to differential flotation of sulfhur with good results in the quality of the concentrates and high recoveries. The obtained fluorite concentrate is of ceramic degree, fluorite of acid degree ca not be obtained because of the presence of Aluminium fluorides that affect the quality of the concentrate.

Fluorite (F2Ca) is an ore that has multiple aplications, the main ones are: manufacture of fluorhidric acid, steel iron industry, welding and ornamental purposes. This ore belongs to the central zone of Peru and besides fluorite, it has metallic values of lead, silver and zinc, these respond well to differential flotation of sulfhur with good results in the quality of the concentrates and high recoveries. The obtained fluorite concentrate is of ceramic degree, fluorite of acid degree ca not be obtained because of the presence of Aluminium fluorides that affect the quality of the concentrate.

The need to develop and know methods for metallurgical treatment to process gold-bearing refractory minerals or hard to treat be- cause of carbon contents, tellurium, antimony, arsenic, carbonates and gold in solution solid sulfides, forces us to study the different methods of specific oxidation that should be applied in each mineral before to leach ore to reach high recoveries into precious metals Through Gravimetrically followed by cyanidation is obtained 94.74% of gold extract in the studied mineral.

The need to develop and know methods for metallurgical treatment to process gold-bearing refractory minerals or hard to treat be- cause of carbon contents, tellurium, antimony, arsenic, carbonates and gold in solution solid sulfides, forces us to study the different methods of specific oxidation that should be applied in each mineral before to leach ore to reach high recoveries into precious metals Through Gravimetrically followed by cyanidation is obtained 94.74% of gold extract in the studied mineral.