What is the basis need to be followed in refractories Classification?
What is the basis need to be followed in refractories Classification? By: Nael Shabana email@example.com : Refractories can be classified on the basis of chemical composition form, physical form, dense or insulating form, or methods of manufacture form. a). Classification Based on Refractories Chemical Composition: Refractories are typically classified on the basis of their […]Continue reading
How can hydration of magnesia bricks be test throughout its life cycle?
How can hydration of magnesia bricks be test throughout its life cycle? By: Nael Shabana firstname.lastname@example.org The easiest ways to test the hydration of magnesia bricks are summarized below as the following: The extent of hydration in magnesia bricks can be tested by light tapping with a metallic hammer. A metallic sound is an […]Continue reading
How does magnesia bricks hydration occur? How does it affect negatively on bricks service life?
How does magnesia bricks hydration occur? How does it affect negatively on bricks service life? By: Nael Shabana email@example.com Generally; magnesia bricks (magnesia-, magnesia-chromite-, and magnesia-spinel-bricks) must be stored in ventilated and dry rooms with protection against weather conditions (snow, rain, splashing water, etc.) as they are sensitive to hydration and can be […]Continue reading
Chapter 3.7 Refractories in Cement Manufacturing by Ricardo Araujo Mosci
Chapter 3.7 Refractories in Cement Manufacturing by Ricardo Araujo Mosci Portland cement manufacturing is an energy intensive operation that involves pyroprocessing of raw materials, referred to as the kiln feed, at extremely high temperatures in rotary kilns. The kiln feed primarily consists of limestone with some additions of clay, sand, and iron oxide that chemi- […]Continue reading
kiln Refractories & lining – bricks refractories lining calculator sheet
kiln Refractories & lining – bricks refractories lining calculator sheet Kiln lining The operational time of rotary kilns depends prirnar- ily on the quality of the kiln lining. To insure long- time kiln operation one willing珍makes allowance for a.higher price for good quality kiln refractory. Unscheduled kiln downtime caused by poor quality kiln lining, […]Continue reading
Analysis of refractory degradation
Analysis of refractory degradationProcedures for its identification and documentation. Wear or Damage? Ideal Wear (As consequence of OEE > 0.85, service life of 12, 24, 36 months) Normal Wear (to date) Slow, continuous loss of lining thickness, with service life < 12, 24, 36 months Damage Sudden, rapid loss of lining thickness […]Continue reading
Refractories Selection Criteria
kiln Refractories Selection Criteria Zoning in cement kiln Drying Zone / Chain Zone Preheating Zone / Calcining Zone Safety Zone Upper and Lower Transition Zone Sintering (Burning) Zone Cooling Zone Drying Zone / Chain Zone High abrasion/wear caused by the movement of the chains Low material temperature (100-400 °C) Selection of Bricks: Dense fire-clay Air setting […]Continue reading
Why do we need cement kiln refractories
Why do we need cement kiln refractories ? To prevent this! Definition / Classification Selection Criteria Analysis of refractory degradation Definition & Classification Definition & classification Types of bonding Basic (MgO, CaO) refractory types Acidic (Al2O3 – SiO2) refractory types Non-shaped products Examples According to ISO R 836, refractories are defined as “non-metallic materials […]Continue reading