kwaliteit kleibaksteen het maken machine & bakstenen-tunneloven fabrikant

Discussion on Pressure Regime in Brictec Tunnel Kiln Firing During tunnel kiln firing, the rationality of the pressure regime has a significant impact on firing results. The kiln pressure regime refers to the distribution pattern of static pressure along the length of the tunnel kiln. By plotting the pressure data of different car positions, a “pressure curve” is obtained. The pressure regime directly determines the flow state of gases inside the kiln, which in turn affects: 1. Heat exchange in the kiln; 2. The amount of combustion air required and the exhaust gas discharged; 3. The uniformity of pressure and temperature distribution inside the kiln.   I. Formation of the Pressure Regime The pressure distribution inside the kiln is the result of multiple gas flows acting together: 1. Cooling zone: A large amount of cold air enters, while heated air is extracted. 2. Firing zone: Fuel combustion generates gases, with the addition of primary air and atomized fuel. Pressure in this zone is usually higher than atmospheric pressure, forming positive pressure. 3. Preheating zone: A large amount of flue gas and water vapor is discharged by the exhaust fan. Kiln pressure is lower than atmospheric pressure, forming negative pressure. During the transition from positive pressure to negative pressure, there exists an interface where the internal kiln pressure equals the external atmospheric pressure. This is called the zero-pressure plane (or zero point/zero position). (1) Before the zero-pressure plane (preheating zone) → Negative pressure zone, beneficial for discharging flue gas and water vapor, but may cause cold air infiltration, leading to thermal stratification and increased temperature difference. (2) After the zero-pressure plane (firing zone) → Positive pressure zone, prevents cold air entry and maintains stable, uniform temperature. II. Control of the Zero-Pressure Position In practical operation, most tunnel kilns maintain the firing zone under slight positive pressure, and set the zero-pressure plane at: 1. The middle of the firing zone; 2. Or around 1/3 of the coal-feeding rows toward the insulation zone; 3. Or slightly behind this position. This allows high-temperature gases to evenly fill the entire brick stack, ensuring uniform heating and insulation of bricks at high temperatures. III. Key Points for Controlling Positive Pressure 1. Advantages of moderate positive pressure: Stable kiln atmosphere, uniform temperature, prevention of cold air entry. 2. Risks of excessive positive pressure: Significant hot gas leakage → increased heat loss; 3. If kiln car bottom sealing is insufficient → hot gases flow downward, possibly leading to: (1) Deformation and damage of kiln car skirts; (2) Wear of sand seal grooves; (3) Evaporation of bearing lubricating oil, causing bearing damage; (4) Deterioration of the working environment. Therefore, tunnel kiln operation should avoid excessive positive pressure and maintain only slight positive pressure.

Brictec met succes gepresenteerd op de 9e Baghdad International Building & Construction Expo (IRAQ BUILDEXPO) Onlangs nam Brictec, een wereldleider in procesontwerp en EPC-constructie van kleibaksteenfabrieken, succesvol deel aan de 9e Baghdad International Building & Construction Expo (IRAQ BUILDEXPO). Op de tentoonstelling presenteerde Brictec een hoogwaardig baksteenfabrieksmodel, waarmee de geavanceerde mogelijkheden op het gebied van tunnelovens, vuurvaste oplossingen voor ovenwagens en turnkey baksteenfabriekprojecten werden benadrukt. De stand trok veel aandacht van professionals uit de industrie en lokale aannemers, en kreeg veel erkenning voor de expertise van Brictec op het gebied van energie-efficiënte, moderne baksteenfabriekoplossingen. Dit evenement markeerde een belangrijke stap voor Brictec om uit te breiden van de Iraakse markt naar de bredere regio van het Midden-Oosten. Door diepgaande uitwisselingen met lokale klanten zal Brictec efficiënte, duurzame en intelligente baksteenfabriekoplossingen blijven bieden, wat bijdraagt aan de kwaliteitsontwikkeling van de bouwmaterialenindustrie in Irak en het Midden-Oosten. De tentoonstelling was een groot succes. Brictec wenst de bevolking van Irak oprecht vrede, voorspoed en geluk toe. Overzicht van de tentoonstelling Over Iraq Build Expo: Iraq Build Expo is de toonaangevende internationale tentoonstelling van het land, gewijd aan de sectoren bouw, bouwmaterialen, infrastructuur en vastgoedontwikkeling. De 9e editie van het evenement vindt plaats van 8 t/m 11 september 2025 op het Baghdad International Fairground. Nu Irak grootschalige wederopbouw en modernisering ondergaat, biedt Iraq Build Expo een essentieel platform voor lokale en internationale bedrijven om hun producten, diensten en technologieën te presenteren aan een zeer gerichte doelgroep van besluitvormers, kopers, investeerders en projectleiders. Met deelname van meer dan 300 exposanten en duizenden professionele bezoekers uit Irak, het Midden-Oosten, Europa en Azië, biedt de expo ongeëvenaarde mogelijkheden om te netwerken, partnerschappen op te bouwen en bij te dragen aan de toekomst van de bebouwde omgeving van Irak. Belangrijkste kenmerken: 1. Uitgebreide tentoonstellingsruimte die alle sectoren van de bouw omvat 2. Hoogwaardig B2B matchmaking-programma 3. Live demonstraties en technische presentaties 4. Deelname van overheidsinstanties en particuliere ontwikkelaars Dankbetuigingen: Wij willen onze dank uitspreken aan de Iraqi Pyramids Group A.S. voor het organiseren van deze tentoonstelling. Redacteur: JF & Lou

Brictec Successfully Completes Thermal Shock Resistance Test for Refractory Bricks, Demonstrating Expertise in Brick Plant Construction With 15 years of experience in complete plant process design and project construction for clay-fired brick production, Brictec has recently completed thermal shock resistance tests for tunnel kiln refractory bricks and kiln car refractory bricks. These tests not only verified the performance of refractory materials under extreme temperature variations but also demonstrated Brictec's professional approach to material selection and quality control in brick plant construction. Importance of Thermal Stability Testing In clay brick production, tunnel kiln refractory bricks and kiln car refractory bricks are directly exposed to high-temperature impacts and frequent thermal cycling. Tunnel kiln bricks must withstand continuous operating temperatures above 1000°C, while kiln car bricks endure severe thermal shocks during the loading/unloading of red brick green bodies. Inadequate thermal stability can lead to cracking and spalling, significantly affecting kiln service life and production safety. Brictec's Rigorous Testing Protocol To ensure refractory bricks meet operational requirements, Brictec has established strict "Refractory Brick Thermal Shock Resistance Testing Standards": Sample Preparation: Specimens cut from production batches according to GB/T 3997.1 Equipment: Program-controlled electric furnace with water quenching system Procedure: Heat specimens to 1100°C for 30 minutes Rapidly quench in 20°C water Repeat cycles until failure occurs Evaluation: Strength retention rate after 20 cycles (≥80% qualified) Quality Assurance for Construction Projects During testing, Brictec utilized temperature monitoring systems integrated with (clay brick making machines) for accurate data collection. Our engineering team paid special attention to refractory performance in actual (red brick making machine) production lines, using test results to select optimal materials for ongoing projects. Key Term Glossary: Clay brick making machine: Core equipment for forming and firing clay bricks Red brick making machine: Automated equipment specialized in standard red brick production Thermal shock resistance: Material's ability to withstand rapid temperature changes without damage Should there be any technical inaccuracies or editorial errors, we welcome corrections and feedback.