GB1349960A – Method of purifying hydrates of calcined dolomite and magnesite
– Google Patents
GB1349960A – Method of purifying hydrates of calcined dolomite and magnesite
– Google Patents
Method of purifying hydrates of calcined dolomite and magnesite
Info
Publication number
GB1349960A
GB1349960A
GB3278571A
GB3278571A
GB1349960A
GB 1349960 A
GB1349960 A
GB 1349960A
GB 3278571 A
GB3278571 A
GB 3278571A
GB 3278571 A
GB3278571 A
GB 3278571A
GB 1349960 A
GB1349960 A
GB 1349960A
Authority
GB
United Kingdom
Prior art keywords
air
chamber
upwardly
dry
hydrate
Prior art date
1970-07-14
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
GB3278571A
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.)
G&WH Corson Inc
Original Assignee
G&WH Corson Inc
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.)
1970-07-14
Filing date
1971-07-13
Publication date
1974-04-10
1971-07-13
Application filed by G&WH Corson Inc
filed
Critical
G&WH Corson Inc
1974-04-10
Publication of GB1349960A
publication
Critical
patent/GB1349960A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
C04B33/00—Clay-wares
C04B33/02—Preparing or treating the raw materials individually or as batches
C04B33/04—Clay; Kaolin
C04B33/06—Rendering lime harmless
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
C01F5/00—Compounds of magnesium
C01F5/14—Magnesium hydroxide
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
C01F5/00—Compounds of magnesium
C01F5/14—Magnesium hydroxide
C01F5/16—Magnesium hydroxide by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium
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
C04B33/00—Clay-wares
C04B33/30—Drying methods
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
C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
C04B35/03—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
C01P2004/00—Particle morphology
C01P2004/60—Particles characterised by their size
C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
Abstract
1349960 Separating solids G & W H CORSON Inc 13 July 1971 [14 July 1970] 32785/71 Headings B2H and B2P Dry, dihydrated, calcined dolomite and/or dry, hydrated, calcined magnesite, having a particle size distribution such that at least the major portion and up to 95% thereof, is -325 mesh (Tyler) and the remainder is larger than 325 mesh, is/are dispersed in an upwardly moving stream of air, in a confined zone, adapted in conjunction with centrifugal force acting primarily on the larger particles selectively to carry a fine fraction of the hydrate upwardly and outwardly to a zone separate and distinct from that to which the remainder is directed, and the fine fraction which has a lower silica content than the original hydrate is separately, recovered. In an air classifier having outer and inner walls 1, 3 defining outer and inner chambers 13, 14, the dry hydrate is fed through a conduit 10 and a chute 11 onto a rotating distributing plate 7 which whirls it off into an upwardly moving air stream produced by a fan 9. The air stream entrains the fine particles upwardly and outwardly past the fan 9 and thence downwardly into the chamber 13 from which they are removed via an exit 2. Larger and heavier particles by virtue of the centrifugal force imparted to them by the distributor plate 7, and aided by selector blades 8, are directed outwardly towards the wall 3 beneath horizontally adjustable plates 15 from where they fall through the chamber 14 and are removed through an exit 4. The rate of air flow is regulated by adjustment of the plates 15. The air stream passes back from the chamber 13 into the chamber 14 through openings 16 and air vanes 17.
GB3278571A
1970-07-14
1971-07-13
Method of purifying hydrates of calcined dolomite and magnesite
Expired
GB1349960A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US5468670A
1970-07-14
1970-07-14
Publications (1)
Publication Number
Publication Date
GB1349960A
true
GB1349960A
(en)
1974-04-10
Family
ID=21992836
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB3278571A
Expired
GB1349960A
(en)
1970-07-14
1971-07-13
Method of purifying hydrates of calcined dolomite and magnesite
Country Status (5)
Country
Link
US
(1)
US3677703A
(en)
CA
(1)
CA930697A
(en)
DE
(1)
DE2134986A1
(en)
FR
(1)
FR2098393A1
(en)
GB
(1)
GB1349960A
(en)
Families Citing this family (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2364568A1
(en)
*
1973-12-24
1975-06-26
Kloeckner Humboldt Deutz Ag
CIRCULAR SEALER WITH ROTARY DISTRIBUTOR
US4516787A
(en)
*
1982-11-10
1985-05-14
At&T Technologies, Inc.
Lightguide preform chuck
FI71786C
(en)
*
1983-02-23
1987-02-09
Enso Gutzeit Oy
KAUSTICERINGSFOERFARANDE.
US4759943A
(en)
*
1985-08-23
1988-07-26
Holly Farms Poultry Industries, Inc.
Classification of food meals made from animal by-products
US11306542B2
(en)
*
2013-09-11
2022-04-19
Schlumberger Technology Corporation
Thermally stable polycrystalline diamond and methods of making the same
CN114682476B
(en)
*
2022-04-19
2023-05-16
广西南宁百会药业集团有限公司
Preparation system of magnesium hydroxide seed crystal
1970
1970-07-14
US
US54686A
patent/US3677703A/en
not_active
Expired – Lifetime
1971
1971-06-23
CA
CA116454A
patent/CA930697A/en
not_active
Expired
1971-07-13
GB
GB3278571A
patent/GB1349960A/en
not_active
Expired
1971-07-13
FR
FR7125676A
patent/FR2098393A1/en
not_active
Withdrawn
1971-07-13
DE
DE19712134986
patent/DE2134986A1/en
active
Pending
Also Published As
Publication number
Publication date
DE2134986A1
(en)
1972-01-20
CA930697A
(en)
1973-07-24
FR2098393A1
(en)
1972-03-10
US3677703A
(en)
1972-07-18
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Legal Events
Date
Code
Title
Description
1974-08-21
PS
Patent sealed [section 19, patents act 1949]
1978-02-15
PLNP
Patent lapsed through nonpayment of renewal fees
1982-08-18
PCNP
Patent ceased through non-payment of renewal fee
