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Standard Test Methods for Determining Liquidus Temperature of Waste Glasses and Simulated Waste Glasses
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STANDARD published on 1.10.2021
Designation standards: ASTM C1720-21
Publication date standards: 1.10.2021
SKU: NS-1043967
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
calibration, gradient furnace, liquidus temperature, uniform temperature furnace,, ICS Number Code 81.040.10 (Raw materials and raw glass)
Significance and Use | ||||||||||||||
5.1?This procedure can be used for (but is not limited to) the following applications: (1)?support glass formulation development to make sure that processing criteria are met, (2)?support production (for example, processing or troubleshooting), and (3)?support model validation. |
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1. Scope | ||||||||||||||
1.1?These test methods cover procedures for determining the liquidus temperature (TL) of nuclear waste, mixed nuclear waste, simulated nuclear waste, or hazardous waste glass in the temperature range from 600 ?C to 1600 ?C. This test method differs from Practice C829 in that it employs additional methods to determine TL. TL is useful in waste glass plant operation, glass formulation, and melter design to determine the minimum temperature that must be maintained in a waste glass melt to make sure that crystallization does not occur or is below a particular constraint, for example, 1 volume % crystallinity or 1.2?Three methods are included, differing in (1.3?The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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2. Referenced Documents | ||||||||||||||
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