US929219A - Method of treating aluminous materials. - Google Patents
Method of treating aluminous materials. Download PDFInfo
- Publication number
- US929219A US929219A US37656707A US1907376567A US929219A US 929219 A US929219 A US 929219A US 37656707 A US37656707 A US 37656707A US 1907376567 A US1907376567 A US 1907376567A US 929219 A US929219 A US 929219A
- Authority
- US
- United States
- Prior art keywords
- aluminous materials
- treating aluminous
- treating
- product
- temperature
- 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
Links
- 239000000463 material Substances 0.000 title description 10
- 238000000034 method Methods 0.000 title description 5
- 238000005204 segregation Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/021—After-treatment of oxides or hydroxides
- C01F7/027—Treatment involving fusion or vaporisation
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Definitions
- the ob'ect of this invention is to prepare a materia suitable for use as an abrasive or for the preparation of grinding or' cutting implements or articles and for other purposes, by fusing in an electric furnace an aluminous material, as for instance anhydrous or hydrated oxid of aluminum, under such temperature conditions as will yield a substantially homogeneous and uniform product.
- the material produced by the fusion of alumina, raw or calcined bauxite or other aluminous material, in the electric furnace usually contains as impurities small proportions of such metals as 'iron, titanium and silicon, or compounds or oxide of these.
- alloys, carbids or oxids which under the variations in t ordinary conditions of operation, viz., when the material is heated merely to the temperature of quiet fusion are not uniformly disseminated throughout the product but occur therein as more or less segregated -masses, which are evident in the product is often somewhat irregularly disseminated,
- the highly heated fused product is in practice permitted to solidify in the electric furnace, being preferably cooled or chilled therein as described in mycopending application 307,090, filed March 2.0, 1906, whereby a product of exceptional toughness and hardness is produced.
- the method which consists in fusing an aluminous material in an electric furnace at a temperature substantially above the state of quiet fusion and suflicient to prevent substantial segregation of impurities, and. recovering the result'in roduct in solid form.
- the method whic consists in fusing an aluminous material in an electric furnace at a temperature substantially above the state of V
Description
ALDUS G.HIGGINS, OF WORCESTER, MASSACHUSETTS.
METHOD OF TREATING ALUMINOUS MATERIALS.
Specification of Letters Patent.
Patented July 27,1909.
Application filed May 31, 1907. Serial No. 376,567.
To all whom it may concern:
Be it known that I, ALDUs C. HIGGINS, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Methods of Treating Aluminous Materials, of which the following is a specification.
The ob'ect of this invention is to prepare a materia suitable for use as an abrasive or for the preparation of grinding or' cutting implements or articles and for other purposes, by fusing in an electric furnace an aluminous material, as for instance anhydrous or hydrated oxid of aluminum, under such temperature conditions as will yield a substantially homogeneous and uniform product.
The material produced by the fusion of alumina, raw or calcined bauxite or other aluminous material, in the electric furnace usually contains as impurities small proportions of such metals as 'iron, titanium and silicon, or compounds or oxide of these.
, alloys, carbids or oxids, .which under the variations in t ordinary conditions of operation, viz., when the material is heated merely to the temperature of quiet fusion are not uniformly disseminated throughout the product but occur therein as more or less segregated -masses, which are evident in the product is often somewhat irregularly disseminated,
therein, rise to objectionable local e composition or structure of the implements.
I have now discovered that while the segregation is often marked in the product prepared at temperatures not great y exceeding the melting point of alumina, when thetemperature is carried to a sufliciently high degree such segregation either does not occur to any substantial or practically objectionable extent, or if segregation exists at any stage of the operation it is followed by a distribution or diffusion of the im urities throughout the highly heated and re atively mobile mass; and that the material produced under such high temperature conditions is substantially uniform and homogeneous, its value for the preparation of abrasives being practically unimpaired by the presence of the uniformly distributed or diffused impurities.
Insufficient temperature conditions in the furnace, with coincident se regation of im all of a number of causes, among which may be mentioned too low current density, toorapid feeding of the charge, and the presence in the char e of an undue proportion of water. Wh' e it is not practicable to specify a definite suitable temperature in degrees of a thermometric scale, such proper temperature' is readily attained and reproduced in practice by observing the above factors and so regulating them as to secure the desired results.
The highly heated fused product is in practice permitted to solidify in the electric furnace, being preferably cooled or chilled therein as described in mycopending application 307,090, filed March 2.0, 1906, whereby a product of exceptional toughness and hardness is produced.
I claim:
1. The method which consists in fusing an aluminous material in an electric furnace at a temperature substantially above the state of quiet fusion and suflicient to prevent substantial segregation of impurities, and. recovering the result'in roduct in solid form.
2. The method whic consists in fusing an aluminous material in an electric furnace at a temperature substantially above the state of V
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37656707A US929219A (en) | 1907-05-31 | 1907-05-31 | Method of treating aluminous materials. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37656707A US929219A (en) | 1907-05-31 | 1907-05-31 | Method of treating aluminous materials. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US929219A true US929219A (en) | 1909-07-27 |
Family
ID=2997644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US37656707A Expired - Lifetime US929219A (en) | 1907-05-31 | 1907-05-31 | Method of treating aluminous materials. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US929219A (en) |
-
1907
- 1907-05-31 US US37656707A patent/US929219A/en not_active Expired - Lifetime
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