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Parallel Flow Regenerative lime kilns emphasise big energy savings by quick lime production, in which the hot gases from the burning shaft where it is acting as a regenerator at the same time, enter the non-burning shaft through crossover channel and preheat the raw limestone bed in non-burning shaft and vise-versa in the next burning period. SÖRMAŞ offers comprehensive and reliable refractory lining concepts for the complicated design of PFR kilns.
| Grade | Description |
| Inlet zone | |
| SÖRK 35 | Fired fireclay brick for lime kilns |
| SÖRK 40 | Fired fireclay brick for general use |
| SÖRK 42 S | Fired and erosion resistant fireclay brick |
| Burning zone | |
| SÖRK M 95 | Fired magnesia brick based on low silica dead burned magnesia and fused magnesia |
| SÖRK MSP 4 | Fired magnesia spinel brick based on magnesia and spinel for lime kilns |
| SÖRK MSP 4 Z1 | Fired magnesia spinel brick based on magnesia and spinel with zircon added for lime kilns |
| SÖRK MSP 5 | Fired magnesia spinel brick based on magnesia and spinel for lime kilns |
| SÖRK MSP 7 | Fired magnesia spinel brick based on magnesia and spinel for lime kilns |
| Supporting archs | |
| SÖRK M 97 | Fired magnesia brick based on sea water magnesia and fused magnesia |
| SÖRK MSP 95 | Fired magnesia spinel brick based on seawater magnesia and sintered spinel for lime kilns |
| Ring channel and crossover channel | |
| SÖRK M 97 | Fired magnesia brick based on sea water magnesia and fused magnesia |
| SÖRK MSP 4 | Fired magnesia spinel brick based on magnesia and spinel for lime kilns |
| SÖRK MSP 4 Z1 | Fired magnesia spinel brick based on magnesia and spinel with zircon added for lime kilns |
| SÖRK MSP 95 | Fired magnesia spinel brick based on magnesia and spinel with zircon added for lime kilns |
| Pillars | |
| SÖRK M 95 | Fired magnesia brick based on low silica dead burned magnesia and fused magnesia |
| SÖRK MSP 4 | Fired magnesia spinel brick based on magnesia and spinel for lime kilns |
| SÖRHK 70 BA | Fired high alumina brick based on bauxite and andalusite |
| SÖRHK 60 A | Fired alumina brick based on andalusite |
| SÖRK 42 S | Fired and erosion resistant fireclay brick |
| Cooling and outlet zone | |
| SÖRHK 70 | Fired high alumina brick based on bauxite |
| SÖRHK 60 A | Fired alumina brick based on andalusite |
| SÖRK 42 S | Fired and erosion resistant fireclay brick |
| Back insulation | |
| SÖRŞİZ 55 | Insulation fireclay brick |
| SÖRŞİZ 65 | Insulation fireclay brick |
| SÖRMASSE IHB 1300 | Insulation castable for gunning and casting applications |