qualità macchina per fabbricare i mattoni dell'argilla & forno per gallerie in mattoni fabbricante

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 ha partecipato con successo alla 9a Baghdad International Building & Construction Expo (IRAQ BUILDEXPO) Recentemente, Brictec, leader mondiale nella progettazione di processi per impianti di produzione di mattoni in argilla e nella costruzione EPC, ha partecipato con successo alla 9a Baghdad International Building & Construction Expo (IRAQ BUILDEXPO). Durante la mostra, Brictec ha presentato un modello di impianto per la produzione di mattoni di alto livello, evidenziando le sue capacità avanzate nella progettazione di forni a tunnel, nelle soluzioni refrattarie per carrelli forno e nei progetti chiavi in mano per impianti di produzione di mattoni. Lo stand ha attirato una forte attenzione da parte dei professionisti del settore e degli appaltatori locali, ottenendo un alto riconoscimento per l'esperienza di Brictec nelle soluzioni per impianti di produzione di mattoni moderni ed efficienti dal punto di vista energetico. Questo evento ha segnato un passo importante per Brictec per espandersi dal mercato iracheno alla più ampia regione del Medio Oriente. Attraverso scambi approfonditi con i clienti locali, Brictec continuerà a fornire soluzioni efficienti, sostenibili e intelligenti per impianti di produzione di mattoni, contribuendo allo sviluppo di qualità dell'industria dei materiali da costruzione in Iraq e in Medio Oriente.La mostra è stata un grande successo. Brictec estende i suoi sinceri auguri di pace, prosperità e felicità al popolo iracheno. Panoramica della mostraInformazioni su Iraq Build Expo: Iraq Build Expo è la principale mostra internazionale del paese dedicata ai settori dell'edilizia, dei materiali da costruzione, delle infrastrutture e dello sviluppo immobiliare. Giunta alla sua 9a edizione, l'evento si svolgerà dall'8 all'11 settembre 2025 presso il Baghdad International Fairground. Mentre l'Iraq continua a subire una ricostruzione e una modernizzazione su larga scala, Iraq Build Expo offre una piattaforma vitale per le aziende locali e internazionali per presentare i loro prodotti, servizi e tecnologie a un pubblico altamente mirato di responsabili decisionali, acquirenti, investitori e responsabili di progetto. Con la partecipazione di oltre 300 espositori e migliaia di visitatori professionali provenienti da Iraq, Medio Oriente, Europa e Asia, la fiera offre opportunità senza pari per fare rete, costruire partnership e contribuire al futuro dell'ambiente costruito in Iraq. Caratteristiche principali:1. Ampia area espositiva che copre tutti i settori dell'edilizia2. Programma di matchmaking B2B di alto livello3. Dimostrazioni dal vivo e presentazioni tecniche4. Partecipazione di enti governativi e sviluppatori privati Ringraziamenti: Desideriamo esprimere la nostra gratitudine all'Iraqi Pyramids Group A.S. per l'organizzazione di questa mostra. Editor: 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.