Thermal-state lining repairing method for coke oven ascending pipes and spray repairing material thereof
A thermal repair and pipe lining technology, which is applied in the heating of coke ovens, coke ovens, coke oven parts, etc., can solve problems such as shortened service life, high maintenance costs and costs of riser pipes, deformation and collapse of riser pipes, etc. Achieve high refractoriness and pressure resistance, superior packing ability, and reduce maintenance costs
Inactive Publication Date: 2013-11-06
MAGANG (GROUP) HOLDING CO LTD +1
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Problems solved by technology
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The invention discloses a thermal-state lining repairing method for coke oven ascending pipes. The thermal-state lining repairing method includes: inspecting before spray repairing, choosing and cleaning an ascending pipe to be repaired and performing spray repairing. A spray repairing material for the thermal-state lining repairing method of the coke oven ascending pipes includes, by weight, 55-75% of flint clay (or synthetic mullite grains or high-aluminum bauxite), 10-25% of high-aluminum cement, 4-8% of expanding agent, 4-6% of soft clay powder, 5-10% of aluminum oxide micropowder and 0.3-1.0% of additive, wherein the expanding agent is kyanite, and the additive is naphthalene sulfonic-formaldehyde condensates. The thermal-state lining repairing method is fast and convenient in repair, and the spray repair material has good caking property and excellent packing capability and has fairly high refractoriness and breaking strength.
Application Domain
Energy inputCoke oven details
Technology Topic
Thermal stateSoft clay +12
Examples
- Experimental program(2)
Example Embodiment
Example Embodiment
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Property | Measurement | Unit |
Operating temperature | 1500.0 | °C |
Bulk density | 1.82 ~ 24.0 | g/cm³ |
Compressive strength | 24.0 | mPa |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
Description & Claims & Application Information
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