Production method for co-production of sulfuric acid and cement from gypsum

The invention discloses a production method for co-production of sulfuric acid and cement from gypsum, and relates to the technical field of cement production, and the method comprises the following steps: S1, drying and dehydrating raw materials and auxiliary materials: dehydrating the raw material...

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Bibliographic Details
Main Authors ZHAO WENBO, LI CHUNPING, XIA CHENGHUA, WANG YONGQUAN, WANG SHUJUN, WANG QIAN, ZHU JIAN
Format Patent
LanguageChinese
English
Published 23.06.2023
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS THEREOF
CONCRETE
INORGANIC CHEMISTRY
LIME, MAGNESIA
METALLURGY
NON-METALLIC ELEMENTS
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The invention discloses a production method for co-production of sulfuric acid and cement from gypsum, and relates to the technical field of cement production, and the method comprises the following steps: S1, drying and dehydrating raw materials and auxiliary materials: dehydrating the raw material dihydrate gypsum and the auxiliary materials sandstone, clay and the like through a drying device, and converting the dihydrate gypsum into semi-hydrated gypsum; s2, the raw materials and the auxiliary materials are mixed in proportion and ground into raw materials; s3, feeding the raw material into a primary reduction decomposition kiln; s4a, putting the raw material into an oxidation firing kiln; s5a, cooling to obtain cement clinker; s6a, cement clinker grinding and delivery; s4b, the sulfur-containing flue gas output in the step S3 is subjected to dust removal; s5b, purifying and drying; s6b, catalytic oxidation: the sulfur-containing flue gas enters a two-conversion and two-absorption system after being purif
Bibliography:Application Number: CN202310140997