Technical Objectives
Rapidly eliminate high-temperature points through targeted spraying and injection.

Technological Overview
When used with mud or fly ash slurry, the biphasic phase-change colloidal material can significantly increase slurry concentration, reduce pipeline blockage risk, and improve grouting efficiency and quality. When sprayed on coal pile surfaces, it isolates oxygen and reduces temperature.

Technical Characteristics
(1) Simple process and easy operation.
(2) No large-scale equipment required for coal pile excavation, making construction simple.
(3) Fast cooling speed, excellent oxygen insulation and long-lasting effect.
(4) Good thermal stability, no risk of water-gas explosion, and usable in open-flame areas.
(5) Non-toxic, non-corrosive, safe and environmentally friendly.

Figure 1: 200g of water mixed with 200g of soil and left to stand for 30 seconds.
Figure 2: 200g of water mixed with 200g of soil with added biphasic phase-change colloidal material.
Figure 3: After the solution in Figure 2 was left to stand for 30 minutes, loess settled and water separated in the upper layer.
Figure 4: Upper water in the beaker from Figure 3 was poured out, and the beaker was inverted on the table to show loess slurry settlement effect.

Composite Colloid Application Process
(1) Take mud or fly ash samples and biphasic phase-change colloidal material for compounding, and determine an appropriate grouting ratio based on the grouting process and pipeline length.
(2) According to experimental data, add an appropriate amount of mud or fly ash to the emergency fire extinguishing device for pulping.
(3) Add the biphasic phase-change colloidal material as required.