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ES118826A1
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An improved process and its corresponding special apparatus for the carbonization of coal and other similar fuels at low temperature.
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ES113654A1
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A procedure, and its corresponding special apparatus, for the reduction of metals minerals susceptible to volatilization.
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ES111489A1
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Improvements in the combustion chambers.
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ES109065A1
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Improvements in the facilities to generate gas and to recover oil.
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ES108994A1
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Improvements in the reduction of minerals.
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ES106993A1
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improvements in roasting and reduction of minerals and similar treatments of other materials.
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CA303095A
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Reduction of metal ores capable of volatilization
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CA327170A
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Fuel carbonisation
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CA313621A
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Method of recovering nickel from ores
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CA298342A
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Roasting and reduction of metallic ores
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CA320689A
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Pulverizer
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CA298343A
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Reduction of ores
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CA296288A
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Gas producing and oil recovery plant
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