ES191384A1
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A procedure to toast sulphury minerals.
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ES191385A1
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A method for making contact in fluid layer.
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ES191386A1
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An apparatus to make contact in fluid layer.
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ES188769A1
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A method of cochizing autonomously agglomerated of zincferous material and carbonaceous material
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ES175501A1
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A procedure for condensating steam of cinc
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ES170357A1
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Improvements introduced in alloy manufacture
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ES169894A1
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Improvements introduced in alloy manufacture
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ES169895A1
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Improvements introduced in alloy manufacture
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ES169819A1
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Improvements introduced in alloy manufacture
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ES169820A1
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Improvements introduced in alloy manufacture
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ES132432A1
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A method to purify metallic zinc.
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ES131406A1
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Improvements in zinc volatilization.
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ES130150A1
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Improvements in zinc purification.
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ES129081A1
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Improvements in the purification of metallic zinc.
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ES126793A1
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Improvements in the purification of zinc vapor.
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ES123957A1
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Improvements in zinc-based alloys to melt matrices.
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ES123871A1
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Improvements in zinc-based alloys to melt matrices.
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ES123856A1
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Improvements in zinc-based alloys to melt matrices.
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ES122880A1
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Improvements introduced in metallurgical furnaces.
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ES118324A1
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Improvements in the treatment of zinc-containing materials containing cadmium.
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