ES369882A1 - Foundry moulding composition - Google Patents
Foundry moulding compositionInfo
- Publication number
- ES369882A1 ES369882A1 ES369882A ES369882A ES369882A1 ES 369882 A1 ES369882 A1 ES 369882A1 ES 369882 A ES369882 A ES 369882A ES 369882 A ES369882 A ES 369882A ES 369882 A1 ES369882 A1 ES 369882A1
- Authority
- ES
- Spain
- Prior art keywords
- hardening
- alkali metal
- weight
- metal silicate
- silicate
- 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
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Mold Materials And Core Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Foundry moulds are produced by adding to particulate materials coated with an alkali metal silicate from 10 to 100%, preferably 40-60%, by weight, based on the weight of the alkali metal silicate of a hardening agent selected from sodium formate or an hydroxide of an element of Group II of the Periodic Table or any combination thereof before or during the shaping operation, and hardening the finished article in the absence of added carbon dioxide. The preferred hardening agent is hydrated lime which is advantageously added in the form of an aqueous suspension. The hardening rate may be accelerated by adding a reducing agent, e.g. calcium silicide or ferrosilicon in an amount of less than 1% by weight. The alkali metal silicate may be sodium or potassium silicate preferably having a molar ratio of SiO 2 : Na 2 O(K 2 O) from 1.2:1 to 3.5:1, preferably 1.65:1 to 2.79:1. Refractory materials specified are silica, zircon, olivine, chromite, refractory grogs, crushed coke, carbon, graphite, silicon carbide, sillimanite, limestone, dolomite and chamotte. The hardening agents may also be used in conjunction with conventional hardeners such as dicalcium silicate, cements, basic slags and oxides and carbonates of elements of Group II of the Periodic Table.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3528168A GB1267919A (en) | 1968-07-24 | 1968-07-24 | Foundry moulding composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES369882A1 true ES369882A1 (en) | 1971-07-16 |
Family
ID=10375945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES369882A Expired ES369882A1 (en) | 1968-07-24 | 1969-07-24 | Foundry moulding composition |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1937466A1 (en) |
| ES (1) | ES369882A1 (en) |
| GB (1) | GB1267919A (en) |
| NL (1) | NL6911197A (en) |
-
1968
- 1968-07-24 GB GB3528168A patent/GB1267919A/en not_active Expired
-
1969
- 1969-07-22 NL NL6911197A patent/NL6911197A/xx unknown
- 1969-07-23 DE DE19691937466 patent/DE1937466A1/en active Pending
- 1969-07-24 ES ES369882A patent/ES369882A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6911197A (en) | 1970-01-27 |
| DE1937466A1 (en) | 1970-01-29 |
| GB1267919A (en) | 1972-03-22 |
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