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US6921520B2
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Process for upgrading raw phosphate ore
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US6169222B1
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Remediation of soil polluted with phosphorus-containing wastes
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US6051201A
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Preparation of phosphatic feedstock from phosphorus-containing waste
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US4968499A
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Conversion of precipitator dust into phosphorus furnace feedstock
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US4919906A
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Processes and equipment for production of elemental phosphorus and thermal phosphoric acid
|
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US4649035A
|
|
Production of phosphorus and phosphoric acid
|
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US4656020A
|
|
Production of phosphorus and phosphoric acid
|
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US4765822A
|
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Recovery of fluorine from waste gases
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US4623528A
|
|
Recovery of fluorine from waste gases
|
|
US4608241A
|
|
Production of phosphorus and phosphoric acid
|
|
US4670240A
|
|
Energy conservation during the smelting of ores
|
|
US4613494A
|
|
Recovery of fluorine from waste gases
|
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US4529439A
|
|
Energy conservation during the smelting of ores
|
|
CA1214020A
|
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Production of fluid fertilizer from phosphorus furnace waste stream
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US4619819A
|
|
Phosphoric acid composition
|
|
US4537615A
|
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Fertilizer from phosphorus furnace waste stream
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US4451277A
|
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Production of fluid fertilizer from phosphorus furnace waste stream
|
|
US4373893A
|
|
Bench scale drum agglomerator and power means
|
|
US4383847A
|
|
Production of fluid fertilizer from phosphorus furnace waste stream
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US4421521A
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Process for agglomerating carbon particles
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