Materials & properties
An overview of the refractory materials from our range that appear suitable for applications in battery storage construction, together with the properties that still have to be substantiated for that purpose.
Materials & properties
Selection criteria
The castables we work with are designed for continuous service between 900 and 2,000 °C. For a battery storage enclosure, that is far more than needed in terms of peak temperature. This is precisely why non-combustibility and mechanical strength are reliably met — with a considerable margin.
There are, however, two properties a furnace material does not automatically bring with it, because they play no role in furnace construction: low thermal conductivity in normal operation and tightness against moisture. Concrete is porous. Both can be solved — through lightweight castables, fibre sandwiches and coatings — but they are part of the design work and cannot be taken for granted.
We therefore name the materials explicitly and state just as clearly what still has to be verified. That is the basis on which you, as the technical contact, can make a decision.
At a glance
- Non-combustibility: mineral-bonded, formal evidence in preparation
- Mechanical strength: high compressive strength, impact resistance at thin wall thicknesses to be verified
- Thermal insulation: achievable with lightweight castables, characteristic values to be requested per project
- Tightness: concrete is porous — coating or internal cladding required
- Weight: lightweight castables noticeably reduce the bulk density
- Pressure relief: a design task, not solvable through material choice
How we work on Materials & properties
Proven methods and specialised equipment for optimal results.
Lightweight castable
Lightweight castables with reduced bulk density. The first choice where weight and thermal conductivity are the main concerns.
Low-cement castable
SOLUT CAST FL 85 and comparable low-cement castables with high strength — for linings with a load-bearing function.
Wear protection castable
SOLUT Cast FL, which can be trowelled, cast and gunned. Suitable for mechanically loaded surfaces and for application onto existing internal walls.
Ceramic fibre
Fibre insulation as an intermediate layer in a sandwich construction, where the thermal conductivity of the overall build-up has to be reduced further.
Step by step to the result
Structured, transparent and on schedule — this is how we work.
Requirements profile
Determining which property leads in the specific project: weight, insulation, strength or workability.
No material can be optimal in every discipline at once — the priorities determine the selection.
Narrowing down candidates
Pre-selection from the available range on the basis of the requirements profile.
The result is a shortlist of two or three castables rather than an unmanageable catalogue.
Obtaining characteristic values
Requesting the project-relevant laboratory values from the manufacturers.
Thermal conductivity and water absorption in particular are often not stated in furnace data sheets in the form that storage system construction requires.
Sampling
Production of test specimens from the candidate castables.
Practical assessment of surface, processing and handling — often more informative than the data sheet.
Final selection
Selection of the castable and documentation of the decision.
With reasoning and the associated data sheets, usable as an annex to your system documentation.
Material flows in Materials & properties
Proper separation, recovery and disposal of all resulting materials.
Lightweight castable
AVV CastableLightweight castables with reduced bulk density — the most promising candidate where weight and insulation matter.
SOLUT Cast FL
AVV CastableCement-bonded, versatile in processing. Of interest for retrofits onto existing surfaces.
SOLUT CAST FL 85
AVV CastableLow-cement castable with high strength for linings that contribute structurally.
SOLUT CAST ASC 96
AVV In-house productOur own development, up to 1,600 °C. A candidate for special components with high thermal shock resistance.
Selection criteria
Typical situations in which Materials & properties is used.
A material has to be selected for a specific enclosure concept
Characteristic values are needed for the system documentation
The weight limit of the enclosure is tight
Thermal conductivity in normal operation is a design criterion
Comparison of several castables before sampling
An existing design is to be converted to a mineral construction
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