US4262885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prefabricated consumable blast furnace runner
Assignee: Individual
•
Filing: 1980-02-21
•
Granted: 1981-04-21
•
Expires: 2000-02-21
Abstract
Abstract A runner for hot metal as from a blast furnace is formed of a series of interconnected modular units which are prefabricated from consumable combustible, and/or disintegrable materials of desired densities resulting in a calculated exposure life determined by the amount, the time and the temperature of the molten metal handled by the runners. The modular runners are formed of a mixture including clay, wood chips, paper pulp and/or any combustible material, which when mixed or blended with any refractory produces a consumable, disintegrating combustible mixture that has a disintegration or combustion rate dictated by the density of the compaction of the material in the finished product.
Inventors
- 👤 Micheal D. LaBate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:03
CPC Classifications
C; C21; C21B; C21B7/00; C21B7/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
47 words
A hot metal runner unit comprising an elongated trough-like body member having a base and spaced parallel upstanding side sections wherein said runner unit is a solid compacted heat dried shape of consumable and disintegrable material having a predetermined lifetime when subjected to molten metal flowing therethrough.
Claim 2
Dependent Claim
47 words
A hot metal runner unit comprising an elongated trough-like body member having a base and spaced parallel upstanding side sections wherein said runner unit is a solid compacted heat dried shape of consumable and disintegrable material having a predetermined lifetime when subjected to molten metal flowing therethrough.
Claim 3
Dependent Claim
35 words
The hot metal runner unit set forth in claim 1 and wherein the consumable and disintegrable material comprises organic and inorganic material characterized by being combustible so as to lose its initial shape upon combustion.
Claim 4
Dependent Claim
23 words
The hot metal runner unit set forth in claim 1 and wherein a refractory material such as clay is incorporated in the material.
Claim 5
Dependent Claim
41 words
The hot metal runner unit set forth in claim 1 and wherein the consumable and disintegrable material comprise one or more such materials from a group including wood chips, sawdust, paper pulp, rice hulls, dolomite and various resins, natural and synthetic.
Claim 6
Dependent Claim
28 words
The hot metal runner unit set forth in claim 1 and wherein the unit is formed of several layers of said material each compacted to a different degree.
Claim 7
Dependent Claim
39 words
The hot metal runner unit set forth in claim 1 and wherein a graphite coating is penetrated into the metal receiving areas of said unit and the graphite is applied as a sub-coloidal particle size in a liquid carrier.
Claim 8
Dependent Claim
29 words
The hot metal runner unit of claim 1 and wherein fasteners are positioned in the upper parts of said side sections to enable lifting means to be attached thereto.
Claim 9
Dependent Claim
43 words
The hot metal runner unit set forth in claim 1 and wherein the opposite ends of said runner unit are stepped, one end inwardly and one end outwardly, so as to form inter-engaging configurations on adjacent runner units in axial allignment and engagement.
Claim 10
Dependent Claim
30 words
The hot metal runner set forth in claim 1 and wherein the consumable material comprises paper pulp, and the disintegratable material comprises dolomite and a cover block is positione thereon.
Claim 11
Dependent Claim
31 words
The hot metal runner set forth in claim 1 and wherein the consumable material comprises paper pulp and the disintegratable material comprises dolomite and sodium silicate is present as a binder.
Claim 12
Dependent Claim
27 words
The hot metal runner set forth in claim 1 consisting essentially of about 17% by weight sawdust, 61% by weight dolomite, and 22% by weight sodium silicate.
Claim 13
Dependent Claim
31 words
The hot metal runner set forth in claim 1 and consisting essentially of about 17% by weight paper pulp, 61% by weight dolomite and 22% by weight resin as a binder.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |