GB733709A - Improvements in or relating to a chamber-drying process for crucibles, muffles and the like - Google Patents
Improvements in or relating to a chamber-drying process for crucibles, muffles and the likeInfo
- Publication number
- GB733709A GB733709A GB263153A GB263153A GB733709A GB 733709 A GB733709 A GB 733709A GB 263153 A GB263153 A GB 263153A GB 263153 A GB263153 A GB 263153A GB 733709 A GB733709 A GB 733709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drying
- specimen
- objects
- chamber
- 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
Links
- 238000001035 drying Methods 0.000 title abstract 8
- 238000009423 ventilation Methods 0.000 abstract 4
- 230000008602 contraction Effects 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 230000000284 resting effect Effects 0.000 abstract 2
- 229920006395 saturated elastomer Polymers 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000750 progressive effect Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
733,709. Drying refractory objects. COMPAGNIE ROYALE ASTURIENNE DES MINES. Jan. 29, 1953, No. 2631/53. Class 34 (2). In the drying of crucibles, muffles and like refractory objects, a specimen is brought gradually, in a moisture-saturated atmosphere in a test chamber, to a temperature of 35- 40‹ C. and then heated under conditions of controlled ventilation and finally under gradually increasing temperature to obtain a predetermined contraction of the specimen which indicates completion of drying and the objects to be dried are then submitted to similar conditions in a drying chamber with the use of temperatures and durations of heating &c. determined from data obtained in the test on the specimen. In a preferred method the test includes three stages, viz (1) slow and progressive heating for two hours in a saturated atmosphere to reach a temperature of 35-40‹ C.; (2) drying at this temperature for about 15 hours. with ventilation by natural draught to obtain a contraction causing a decrease in height of the specimen of the order of two millimetres per hour; (3) drying at a temperature rising gradually to 70-80‹ C. with increasing ventilation by forced draught to obtain a decrease of height of two to three millimetres per hour. The test chamber, a wooden cabinet lined with heatinsulating material, has a platform 5 to support the specimens 18 and beneath which are electric resistance heaters 6. Dampers 9, 10 and a fan 11 provide means for forced or natural draught and the decrease in height of the specimen is measured by a recording device 12 comprising a drum 13 rotated by clockwork mechanism and carrying a chart upon which a pen 14, carried by a rod 15 sliding in a tube 16 and resting on the top of the specimen 18, draws a trace. The main drying chamber has its base covered with a lattice structure 24 upon which the objects 25 are supported, heating being by finned steam pipes 26 and air intakes 29 and vents 30 connected to a central discharge conduit 31 which may be connected to a fan 33, providing means for ventilation. Measurement of contraction of the objects is by means of a recording device 37 having a pen 39 carried by a rod 40 sliding in a tube 41 and resting on top of one of the objects. The chamber also has thermometers and psychrometers which may be observed through windows 27, 28.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB263153A GB733709A (en) | 1953-01-29 | 1953-01-29 | Improvements in or relating to a chamber-drying process for crucibles, muffles and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB263153A GB733709A (en) | 1953-01-29 | 1953-01-29 | Improvements in or relating to a chamber-drying process for crucibles, muffles and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB733709A true GB733709A (en) | 1955-07-20 |
Family
ID=9742955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB263153A Expired GB733709A (en) | 1953-01-29 | 1953-01-29 | Improvements in or relating to a chamber-drying process for crucibles, muffles and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB733709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898924A (en) * | 2021-10-28 | 2022-01-07 | 浙江华是科技股份有限公司 | White light illuminating device and preparation method of fluorescent powder |
-
1953
- 1953-01-29 GB GB263153A patent/GB733709A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898924A (en) * | 2021-10-28 | 2022-01-07 | 浙江华是科技股份有限公司 | White light illuminating device and preparation method of fluorescent powder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103969147B (en) | A kind of full-automatic petroleum ash content determinator | |
| CN106442622B (en) | Rotary slow-baking safety test device | |
| GB733709A (en) | Improvements in or relating to a chamber-drying process for crucibles, muffles and the like | |
| GB1090833A (en) | Improvements in and relating to methods and apparatus for measuring characteristics of metallic materials | |
| GB1435783A (en) | Device and method for measuring the humidity of gases | |
| CN206330858U (en) | Residue meausring apparatus in volatile matter heating process | |
| CN107460124A (en) | A kind of animal embryo culture apparatus | |
| McCONNELL et al. | Apparatus for differential thermal analysis | |
| CN103148892A (en) | Constant-pressure briquette coal carbonization process quality and volume measuring device | |
| CN206330961U (en) | A kind of non-ignitable system safety testing device of building materials | |
| Raskin et al. | An Adiabatic Apparatus for the Study of Self‐Heating of Poorly Conducting Materials | |
| CN201517987U (en) | Device for rapidly measuring total moisture in coal | |
| RU2684434C1 (en) | Brick firing thermal analyzer | |
| US2580259A (en) | Temperature equalizing means for furnaces | |
| FR1106351A (en) | Gas burners for rapid heating at high temperature | |
| SU89177A1 (en) | Method for determining the resistance of metal samples to bending during heating | |
| SU428009A1 (en) | METHOD OF MODELING THE THERMAL TREATMENT OF STEEL | |
| CN205844116U (en) | A kind of anaerobic fermentation raw material characteristic test device based on thermogravimetric analysis | |
| GB921887A (en) | Method of and apparatus for the determination of steam moisture | |
| GB911849A (en) | Improvements in or relating to apparatus for measuring the coefficient of thermal conductivity of solid materials | |
| Foxwell | Determination of Temperature of Plasticity of Coals. | |
| JH et al. | A high temperature sintering furnace | |
| ES259428A1 (en) | A gas or oil calcuted air heating apparatus (Machine-translation by Google Translate, not legally binding) | |
| CN109298012A (en) | A kind of evaporation experiment platform at temperature and ambient wind velocity coupling condition | |
| Brubaker | Use of thermocouples in measuring temperature-humidity conditions in commercial dry kilns |