What are the storage conditions for refractory castables?

The storage conditions of refractory castables are crucial for their performance and service life. The following are the key requirements after comprehensive search results:

1、 Environmental requirements

dry and well-ventilated

The storage warehouse should avoid moisture and water accumulation, choose a well ventilated indoor environment, and lay moisture-proof mats or pallets on the ground to isolate moisture.

The relative humidity should be controlled between 5% and 30%. Excessive humidity can easily cause the material to absorb moisture and clump.

Avoid direct sunlight

The storage area needs to be shaded to prevent direct sunlight from accelerating material aging or moisture evaporation.

temperature control

The suitable temperature is 15-25 ℃, and antifreeze is required in winter (≥ 5 ℃), while cooling is required in summer (≤ 30 ℃).

2、 Packaging and stacking

sealed packaging

Unopened materials should be kept in their original packaging intact, and opened parts should be resealed (such as using moisture-proof bags) to reduce air contact.

Classified stacking

Separate the storage of different types of castables to avoid confusion; The stacking height should not exceed the load-bearing limit of the packaging to prevent collapse.

Moisture proof treatment

Lay wooden boards or pallets on the ground to avoid direct contact with the ground; Warehouse doors and windows need to be designed to prevent rain.

3、 Storage period and inspection

shelf life

Unopened castables can usually be stored for 3-6 months (cement-based), while phosphate based castables can only be stored for 3 months.

After the expiration date, the performance needs to be tested, and some binders can be replaced to continue using.

regular inspection

Monthly inspection of appearance (clumping, cracks) and fluidity, and timely handling of abnormal situations.

4、 Response to special circumstances

Winter storage

Insulation and antifreeze are required, and the material should be stored in a warehouse with a temperature of ≥ 5 ℃ to avoid freezing and brittleness.

Summer storage

Sunshade and cooling are necessary during high temperatures to prevent materials from decomposing due to heat.

5、 Other precautions

Identification management: Packaging should indicate the production date and type to avoid misuse of expired products.

Transportation protection: shockproof and rainproof packaging to prevent damage or moisture during transportation.

By strictly following the above conditions, it is possible to ensure that refractory castables maintain better performance during storage and extend their service life.