GB647910A - Improvements in methods of producing purifying media for liquids - Google Patents

Improvements in methods of producing purifying media for liquids

Info

Publication number
GB647910A
GB647910A GB25846/47A GB2584647A GB647910A GB 647910 A GB647910 A GB 647910A GB 25846/47 A GB25846/47 A GB 25846/47A GB 2584647 A GB2584647 A GB 2584647A GB 647910 A GB647910 A GB 647910A
Authority
GB
United Kingdom
Prior art keywords
mixture
per cent
magnesium
manufacture
calcining
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 - Lifetime
Application number
GB25846/47A
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
Publication of GB647910A publication Critical patent/GB647910A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/041—Oxides or hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/42—Materials comprising a mixture of inorganic materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

A purifying reagent is produced by mixing a magnesium-compound containing material with the so-called combined waste products resulting from the manufacture of Portland cement clinker and thereafter converting a portion of the mineral components of the mixture to activated oxide form. Sufficient of the mineral components of the mixture may be converted to produce a final product having a pH from 11.3 to 12.4. The conversion step may consist in calcining the mixture, preferably at a temperature of from 600 to 800 DEG C. for from 5 to 30 minutes, the porosity of a portion of the inert components of the mixture being increased thereby at the same time. The temperature and duration of the calcining may alternatively be chosen to bring about an ignition loss in the final product of from 2 to 10 per cent. The "combined waste products" consist of calcite, mica, feldspar and quartz, with small proportions of talc, graphite, dolomite and iron pyrites. They result from the grinding, classification, froth-flotation and thickening operations performed on the clayey and lime-bearing materials used in cement manufacture. Several U.S.A. Specifications relating to such manufacture are referred to in the Specification. The magnesium compound may be magnesium hydroxide (brucite) comprising 30 to 70 per cent (preferably 50 per cent) of the mixture; or magnesium carbonate (magnesite) comprising 45 to 75 per cent (preferably 60 per cent). The "combined products" and the magnesium compound may be calcined separately and subsequently mixed.ALSO:A purifying reagent is produced by mixing a magnesium-compound-containing material with the so-called combined waste products resulting from the manufacture of Portland cement clinker and thereafter converting a portion of the mineral components of the mixture to activated oxide form. Sufficient of the mineral components of the mixture may be converted to produce a final product having a pH from 11.3 to 12.4. The conversion step may consist in calcining the mixture, preferably at a temperature of from 600 to 800 DEG C for from 5 to 30 minutes, the porosity of a portion of the inert components of the mixture being increased thereby at the same time. The temperature and duration of the calcining may alternatively be chosen to bring about an ignition loss in the final product of from 2 to 10 per cent. The "combined waste products" consist of calcite, mica, feldspar and quartz, with small proportions of talc, graphite, dolomite and iron pyrites. They result from the grinding, classification, froth flotation, and thickening operations performed on the clayey and lime-bearing materials used in cement manufacture. Several U.S.A. Specifications relating to such manufacture are referred to in the Specification. The magnesium compound may be magnesium hydroxide (brucite) comprising 30 to 70 per cent (preferably 50 per cent) of the mixture; or magnesium carbonate (magnesite) comprising 45 to 75 per cent (preferably 60 per cent). The "combined products" and the magnesium compound may be calcined separately and subsequently mixed.ALSO:A reagent is produced by mixing a magnesium-compound-containing material with the so-called combined waste products resulting from the manufacture of Portland cement clinker and thereafter converting a portion of the mineral components of the mixture to activated oxide form. Sufficient of the mineral components of the mixture may be converted to produce a final product having a pH from 11.3 to 12.4. The conversion step may consist in calcining the mixture, preferably at a temperature from 600 DEG to 800 DEG C for from 5 to 30 minutes, the porosity of a portion of the inert components of the mixture being increased thereby at the same time. The temperature and duration of the calcining may alternatively be chosen to bring about an ignition loss in the final product of from 2 to 10 per cent. The "combined waste products" consist of calcite, mica, feldspar and quartz, with small proportions of talc, graphite, dolomite and iron pyrites. They result from the grinding, classification, froth-flotation and thickening operations performed on the clayey and lime-bearing materials used in cement manufacture. Several U.S.A. Specifications relating to such manufacture are referred to in the Specification. The magnesium compound may be magnesium hydroxide (brucite) comprising 30 to 70 per cent (preferably 50 per cent) of the mixture; or magnesium carbonate (magnesite) comprising 45 to 75 per cent (preferably 60 per cent). The "combined products" and the magnesium compound may be calcined separately and subsequently mixed.
GB25846/47A 1947-01-18 1947-09-23 Improvements in methods of producing purifying media for liquids Expired - Lifetime GB647910A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US647910XA 1947-01-18 1947-01-18

Publications (1)

Publication Number Publication Date
GB647910A true GB647910A (en) 1950-12-28

Family

ID=22058299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25846/47A Expired - Lifetime GB647910A (en) 1947-01-18 1947-09-23 Improvements in methods of producing purifying media for liquids

Country Status (1)

Country Link
GB (1) GB647910A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436186A1 (en) * 1978-07-24 1980-04-11 Toyo Soda Mfg Co Ltd PROCESS FOR REFINING BEET JUICE
WO2000005178A1 (en) * 1998-07-22 2000-02-03 Ipres Inžiniering S.R.O. Sorbent, method for producing the same and use of the same for immobilisation of heavy metals and phosphates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2436186A1 (en) * 1978-07-24 1980-04-11 Toyo Soda Mfg Co Ltd PROCESS FOR REFINING BEET JUICE
WO2000005178A1 (en) * 1998-07-22 2000-02-03 Ipres Inžiniering S.R.O. Sorbent, method for producing the same and use of the same for immobilisation of heavy metals and phosphates

Similar Documents

Publication Publication Date Title
NZ333581A (en) Derivation of pure fine particle silica and pure aluminium hydroxide from clay minerals
GB647910A (en) Improvements in methods of producing purifying media for liquids
US3770475A (en) Process for producing hydrates of calcium-magnesium silicates
ES8702319A1 (en) Production of solid phosphorus pentoxide containing materials for fast-setting cements.
GB520829A (en) Manufacture of sintered calcium oxide
EP0189889A3 (en) Process for producing cement clinker
GB562544A (en) Manufacture of calcium carbonate
GB728306A (en) Improvements in or relating to silicon carbide refractory material
US2343151A (en) Method of processing dolomite
US1680066A (en) Process for obtaining pure alumina and alkali-metal carbonates
FR2035717A5 (en) Prepn of finely divided silicate containing - material
SU1328332A1 (en) Raw mixture for producing silicate brick
US1372015A (en) Manufacture of slow-setting cement
SU922092A1 (en) Raw meal for producing cement clinker
RU2082687C1 (en) Method for production of binder
SU239289A1 (en) METHOD OF OBTAINING CHLORIDE BARIUM
SU937391A1 (en) Raw mixture for producing portland cement clinker
GB939213A (en) Method of making a nickel-magnesium hydrocarbon-steam reforming catalyst
SU950691A1 (en) Raw mix for producing portland cement clinker
SU62351A1 (en) The method of preparation of silico-calcium cement
SU1662929A1 (en) Method of producing wollastonite
SU735581A1 (en) Mix for making asbestos-cement articles
JPS5692115A (en) Manufacture of calcium sulfoaluminate
RU2052379C1 (en) Method for production of sodium-chromium silicate
SU661104A1 (en) Plugging mix