GB439198A - An improved manufacture of portland cement and the like - Google Patents

An improved manufacture of portland cement and the like

Info

Publication number
GB439198A
GB439198A GB1640034A GB1640034A GB439198A GB 439198 A GB439198 A GB 439198A GB 1640034 A GB1640034 A GB 1640034A GB 1640034 A GB1640034 A GB 1640034A GB 439198 A GB439198 A GB 439198A
Authority
GB
United Kingdom
Prior art keywords
slurry
colloids
added
soap
colloidal
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
GB1640034A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to GB1640034A priority Critical patent/GB439198A/en
Publication of GB439198A publication Critical patent/GB439198A/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
    • C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
    • C04B7/42—Active ingredients added before, or during, the burning process

Abstract

In the production of Portland cement or the like, such as puzzolanas, by the wet method, one or more colloids, which are stable in dispersions having an alkaline reaction, is or are added to the raw materials and the pH value of the slurry is adjusted, if necessary, to be between 7,5 and 10; in this way it is stated that slurries of low water content but of low viscosity may be obtained. The degree of alkalinity may be increased by adding, for example, caustic alkalies, soda or lime, or decreased by adding, for example, carbon dioxide or flue gases rich in carbon dioxide. The control of the pH value may be effected by the colloids added; colloids specified are black lye from sulphate cellulose production, sulphite refuse acid, peat, mud, brown coal (without or after treatment by alkali), colloidal silicic acid, aluminium hydrate, soap for example resin soap or potash soap, colloidal fat and resin acids and various colloidal refuse products of acid neutral or alkaline reaction. In examples, ,075 per cent brown coal and ,05 per cent black lye from sulphate cellulose production, based on the solid constituents of the slurry, are added to the slurry.
GB1640034A 1934-06-01 1934-06-01 An improved manufacture of portland cement and the like Expired GB439198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1640034A GB439198A (en) 1934-06-01 1934-06-01 An improved manufacture of portland cement and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1640034A GB439198A (en) 1934-06-01 1934-06-01 An improved manufacture of portland cement and the like

Publications (1)

Publication Number Publication Date
GB439198A true GB439198A (en) 1935-12-02

Family

ID=10076632

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1640034A Expired GB439198A (en) 1934-06-01 1934-06-01 An improved manufacture of portland cement and the like

Country Status (1)

Country Link
GB (1) GB439198A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790725A (en) * 1954-09-27 1957-04-30 Monolith Portland Midwest Comp Lowering the viscosity of cement slurry by addition of co2 gas
US2860061A (en) * 1954-12-07 1958-11-11 Smidth & Co As F L Composition and process for manufacturing cement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790725A (en) * 1954-09-27 1957-04-30 Monolith Portland Midwest Comp Lowering the viscosity of cement slurry by addition of co2 gas
US2860061A (en) * 1954-12-07 1958-11-11 Smidth & Co As F L Composition and process for manufacturing cement

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