Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comprehensive utilization method of stone coal resources
A comprehensive utilization method of stone coal resources comprises the following steps: 1, crushing stone coal, and carrying out ball milling; 2, adding water, adding concentrated sulfuric acid, and stacking for slaking; 3, adding water, mixing, and carrying out solid-liquid separation; 4, sintering tailings to make red bricks or a garbage fertilizer; 5, preparing ammonium alum; 6, separating to prepare calcium sulfate dihydrate; 7, separating to obtain a sodium metavanadate solution; and 8, preparing vanadic anhydride, carrying out solid-liquid separation to obtain a liquid which is a sodium chloride solution, and heating for evaporation to obtain industrial salt. A small amount of sulfuric acid is added in the production process, most sulfuric acid is consumed in the stacking slaking process to form sulfate, and sulfate basically has no corrosion, so special protection is not needed. Ion exchange resin is Dow weak alkaline anion resin containing a weak alkaline group, and has the advantages of good adsorption ability, strong selectivity, good regeneration property, environmental protection, and simple and safe operation.
Comprehensive utilization method of stone coal resources
A comprehensive utilization method of stone coal resources comprises the following steps: 1, crushing stone coal, and carrying out ball milling; 2, adding water, adding concentrated sulfuric acid, and stacking for slaking; 3, adding water, mixing, and carrying out solid-liquid separation; 4, sintering tailings to make red bricks or a garbage fertilizer; 5, preparing ammonium alum; 6, separating to prepare calcium sulfate dihydrate; 7, separating to obtain a sodium metavanadate solution; and 8, preparing vanadic anhydride, carrying out solid-liquid separation to obtain a liquid which is a sodium chloride solution, and heating for evaporation to obtain industrial salt. A small amount of sulfuric acid is added in the production process, most sulfuric acid is consumed in the stacking slaking process to form sulfate, and sulfate basically has no corrosion, so special protection is not needed. Ion exchange resin is Dow weak alkaline anion resin containing a weak alkaline group, and has the advantages of good adsorption ability, strong selectivity, good regeneration property, environmental protection, and simple and safe operation.
Comprehensive utilization method of stone coal resources
ZHANG WEIFENG (Autor:in) / JIANG GUISHENG (Autor:in)
19.08.2015
Patent
Elektronische Ressource
Englisch
IPC:
B09B
DISPOSAL OF SOLID WASTE
,
Beseitigung von festem Abfall
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
/
C05F
ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
,
Organische, nicht von den Unterklassen C05B, C05C umfasste Düngemittel, z.B. Düngemittel aus Abfall oder Müll
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