GB1257008A - - Google Patents

Info

Publication number
GB1257008A
GB1257008A GB1257008DA GB1257008A GB 1257008 A GB1257008 A GB 1257008A GB 1257008D A GB1257008D A GB 1257008DA GB 1257008 A GB1257008 A GB 1257008A
Authority
GB
United Kingdom
Prior art keywords
heat exchanger
cement
oxygen content
sulphuric acid
acid process
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1257008A publication Critical patent/GB1257008A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00—Hydraulic cements
    • C04B7/36—Manufacture of hydraulic cements in general
    • C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
    • C04B7/432—Preheating without addition of fuel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,257,008. Cement Sulphuric acid Process. STICKSTOFFWERK PIESTERITZ VEB. 19 May, 1970, No. 24169/70. Heading C1H. In the Cement Sulphuric acid Process the waste gases from the cement rotary kiln are used to preheat the raw stock in a fluidized bed heat exchanger, and, by using a reducing flame in the kiln its said gases contain an equivalent amount of CO 2 and/or H 2 S and/or sulphur vapour which quantitatively removes the oxygen content of the gas atmosphere in the heat exchanger resulting from infiltration of air. The waste gas leaving the heat exchanger operating at 800‹ C. has a CO content of at least 0À1% and an oxygen content of at most 0À5%. In an example the oxygen content of the heat exchanger atmosphere was reduced from 1À3% to 0À45%.
GB1257008D 1970-05-19 1970-05-19 Expired GB1257008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2416970 1970-05-19

Publications (1)

Publication Number Publication Date
GB1257008A true GB1257008A (en) 1971-12-15

Family

ID=10207488

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1257008D Expired GB1257008A (en) 1970-05-19 1970-05-19

Country Status (1)

Country Link
GB (1) GB1257008A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040853A (en) * 1974-12-23 1977-08-09 Chemie Linz Aktiengesellschaft Process for the preparation of raw mix for the production of cement and sulphuric acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4040853A (en) * 1974-12-23 1977-08-09 Chemie Linz Aktiengesellschaft Process for the preparation of raw mix for the production of cement and sulphuric acid

Similar Documents

Publication Publication Date Title
GB1506589A (en) Process of and apparatus for heat-treating material and conditioning waste exhaust gases
ES418724A1 (en) Recovery of sulfur from so2-containing regeneration off-gases
ES8707163A1 (en) Process and apparatus for manufacturing low sulfur cement clinker.
GB1224816A (en) Improvements in or relating to absorption agents
GB1257008A (en)
KR880001546A (en) Method for producing cement clinker and SO₂-containing exhaust gas
GB1364957A (en) Process for the manufacture of cement clinker and sulphur dioxide
GB1291946A (en) Treatment of cement raw materials and plants for use therein
SU571198A3 (en) Method of two-stage roasting of pyrite in reactors with fluidized bed
MD51C2 (en) Process for cement clinker production
GB1356653A (en) Catalytic oxidation of so2 to so3
GB1248885A (en) Manufacture of cement clinker
GB764537A (en) Improvements relating to the burning of materials containing sulphates
ES383541A1 (en) Sulphur-burning process
GB1252871A (en)
GB1305750A (en)
ES426858A1 (en) Methods of and plants for burning cement
GB1322292A (en) Process for converting hydrated magnesium sulphite to magnesium oxide
GB1161558A (en) A Shaft Furnace for Burning or Calcining Limestone
GB1276659A (en) Improvements in the recovery of sulphur
GB1176756A (en) A Process for Repressing the Formation of SO3 in Gases Ensuing from the Roasting of Iron Pyrites.
GB965000A (en) Improvements relating to refractory bricks
ES375614A1 (en) Method of manufacturing sulphuric acid according to the contact method
JPS5324302A (en) Manufacture of coke
ES210729A1 (en) A procedure for the treatment of sulphurous iron minerals (Machine-translation by Google Translate, not legally binding)

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees