MgO / MgO-C / Forsterite based gunning & trowelling mixes
Application Industry: Refractories for Steel Industry
Application Equipment: Tundish Working Layer and Steel Ladle Permanent Lining
Size: Custom gunning and trowelling mix grain size per tundish and ladle lining design (free engineering on request)
Products Overview
Our MgO / MgO-C / Forsterite Based Gunning & Trowelling Mixes is a high-performance refractory product engineered for tundish working layer and steel ladle permanent lining service. This series of products are made of high purity MgO, sintered MgO-CaO aggregate and forsterite incorporated with appropriate binder, anti-spalling agent, dispersant, plasticiser, and adhesiveness enhancer. The products are easy to install, pre-firing and dismantle after use. Installation can be done by gunning or manual trowelling, and it is recognised as the preferable working life for tundish especially for stainless and alloy steel production.
The MgO / MgO-C / Forsterite Based Gunning & Trowelling Mixes product family is offered in three engineering-proven TM and TMG chemistry grades with two material systems. The CH-TM70 grade (MgO/Forsterite based, MgO content 60%-70%) is the standard variant for general tundish and ladle permanent lining service. The CH-TM80 grade (MgO/Forsterite based, MgO content minimum 80%) is the high-magnesia variant for demanding tundish and ladle permanent lining service. The CH-TMG15 grade (MgO-CaO based, MgO content minimum 65%, CaO content 10%-20%) is the calcium-magnesia variant for tundish and ladle permanent lining service with high calcium content. All three grades deliver Bulk Density 1.6 to 2.3 g/cm³ after 110 °C curing for 24 hours, Permanent Linear Change −3.0 to −0.5 percent after 1500 °C firing for 3 hours, Modulus of Rupture minimum 1.0 to 1.5 MPa after 110 °C curing and minimum 2.5 to 3.5 MPa after 1500 °C firing, and Cold Crushing Strength minimum 2 to 3 MPa after 110 °C curing and minimum 10 MPa after 1500 °C firing for 3 hours.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each MgO / MgO-C / Forsterite Based Gunning & Trowelling Mixes grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractories for the Steel Industry category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured from high-purity MgO, sintered MgO-CaO aggregate, and forsterite with appropriate binder, anti-spalling agent, dispersant, plasticiser, and adhesiveness enhancer
- Engineering-proven easy to install, pre-fire, and dismantle after use for tundish and ladle lining service
- Installation can be done by gunning or manual trowelling for flexible application in tundish permanent lining service
- Recognized as the preferable working life for tundish especially for stainless and alloy steel production
- Three TM and TMG chemistry grades covering MgO content 60%-80% and CaO content 10%-20% for matching different tundish and ladle steel grade service
Product Specification
MgO / MgO-C / Forsterite based gunning & trowelling mixes are engineered per buyer’s tundish and ladle lining design. Custom chemistry and grain size available on request.
|
Brands
Items
|
MgO / Forsterite based | MgO-CaO based | |
|---|---|---|---|
| CH-TM70 | CH-TM80 | CH-TMG15 | |
| MgO content (%) | 60~70 | ≥ 80 | ≥ 65 |
| CaO content (%) | — | — | 10~20 |
| Bulk Density (g/cm³) | 1.6~2.0 (110 °C, 24h) |
1.9~2.3 (110 °C, 24h) |
2.0~2.2 (110 °C, 24h) |
| Permanent Linear Change (%) | −3.0~−0.5 (1500 °C, 3h) |
−3.0~−0.5 (1500 °C, 3h) |
−2.0~−0.5 (1500 °C, 3h) |
| Modulus of Rupture (MPa) | ≥ 1.0 (110 °C, 24h) |
≥ 1.0 (110 °C, 24h) |
≥ 1.5 (110 °C, 24h) |
| ≥ 3.0 (1500 °C, 3h) |
≥ 2.5 (1500 °C, 3h) |
≥ 3.5 (1500 °C, 3h) |
|
| Cold Crushing Strength (MPa) | ≥ 2 (110 °C, 24h) |
≥ 3 (110 °C, 24h) |
≥ 3 (110 °C, 24h) |
| ≥ 10 (1500 °C, 3h) |
≥ 10 (1500 °C, 3h) |
≥ 10 (1500 °C, 3h) |
|
Note: Six performance parameters specified: MgO content, CaO content, Bulk Density, Permanent Linear Change, Modulus of Rupture, and Cold Crushing Strength. Three TM and TMG chemistry grades engineered for tundish working lining service in two material systems: MgO / Forsterite based and MgO-CaO based. For project-specific chemistry and grain size, contact CH Refractories engineering.
Product Applications
MgO / MgO-C / Forsterite Based Gunning & Trowelling Mixes is a high-performance refractory product manufactured from high-purity MgO, sintered MgO-CaO aggregate, and forsterite incorporated with appropriate binder, anti-spalling agent, dispersant, plasticiser, and adhesiveness enhancer, engineered for tundish working layer and steel ladle permanent lining service. The product family is easy to install, pre-fire, and dismantle after use. Installation can be done by gunning or manual trowelling, and it is recognised as the preferable working life for tundish especially for stainless and alloy steel production.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Tundish Working Layer and Steel Ladle Permanent Lining of small, medium-size, and large tundish and ladles in steelmaking operations.
Specific Application Zones: The CH-TM70 grade (MgO/Forsterite based, MgO content 60%-70%) is the standard variant for general tundish and ladle permanent lining service. The CH-TM80 grade (MgO/Forsterite based, MgO content minimum 80%) is the high-magnesia variant for demanding tundish and ladle permanent lining service. The CH-TMG15 grade (MgO-CaO based, MgO content minimum 65%, CaO content 10%-20%) is the calcium-magnesia variant for tundish and ladle permanent lining service with high calcium content. All three grades deliver Bulk Density 1.6 to 2.3 g/cm³ after 110 °C curing for 24 hours, Permanent Linear Change −3.0 to −0.5 percent after 1500 °C firing for 3 hours, Modulus of Rupture minimum 1.0 to 1.5 MPa after 110 °C curing and minimum 2.5 to 3.5 MPa after 1500 °C firing, and Cold Crushing Strength minimum 2 to 3 MPa after 110 °C curing and minimum 10 MPa after 1500 °C firing.
CH Refractories is an MgO / MgO-C / Forsterite Based Gunning & Trowelling Mixes manufacturer in China, Henan, Zhengzhou. The complete MgO / MgO-C / Forsterite Based Gunning & Trowelling Mixes product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO refractory standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Refractories for the Steel Industry customers across the global iron and steel value chain.
