ES131130A1
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Improvements in the treatment of iron pyrites to recover sulfur and form iron oxide.
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ES123037A1
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A process of treating sulfur materials.
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ES122050A1
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A method to treat recovered sulfur.
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ES122049A1
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A procedure to remove arsenic and chlorine from sulfur.
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ES120863A1
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Improvements in the production of iron and chlorine compounds.
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ES109330A1
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Improvements in the treatment of pyrites and other minerals or sulphurous materials containing iron.
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ES106721A1
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Improvements in the treatment of iron pyrites.
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ES106724A1
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A procedure to treat copper-rich matter.
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ES106725A1
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Improvements in the treatment of iron pyrites.
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ES106722A1
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Improvements in the electrolysis of ferrous chloride.
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ES106720A1
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Improvements in the treatment of iron pyrites.
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ES106723A1
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Improvements in the separation of lead from solutions.
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CA299037A
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Process of treating iron pyrites
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CA317569A
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Sulphur purification
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CA313647A
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Process of treating pyrites
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CA304138A
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Electrolysis of ferrous chloride
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CA315384A
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Method of removing arsenic and chlorine from sulphur
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CA299036A
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Process of treating iron pyrites
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CA337937A
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Sulphur and iron oxide recovery
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CA322794A
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Process for separating lead from solutions
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