51292222 (41) 98+
واحد فروش

Firebricks – heavy dense fire clay bricks
Firebrick also called as fire clay brick. Nowadays they are called heavy and dense Firebricks but old masters still call them fire clay bricks just because they are made of simple fireclay (which actually is the most ordinary mud.) Fire clay can be easily located out in the nature but it must containing the right refractory properties, suitable content ratio of silica and alumina. Some shops call these bricks fireplace bricks. They are used for instance for building cooking chamber in wood fired ovens, for creating fireplaces, all sorts of fire boxes and wood heaters’ lining, linings in a small or the hugest industrial furnaces, you name it. firebrick detailed photo Fire clay bricks are very heavy/dense having low porosity and even on various re-heating, and under continuous heat, they will last for very/very long time.

Some may confuse them with insulating lightweight firebricks, those are used in different applications. Dense firebricks can be cut only with diamond wheel attached to high speed handheld angle grinders, on an ordinary building brick saw or sliding drop saw for cutting bricks. Fire bricks can be chopped in half easily by using brick chisel and a couple of hits with a heavier hammer. It is fun and quick but may you want to achieve precise nice cuts hire a trade machine or buy yourself at least small size grinder. Before cutting soak the brick in water by dipping it in a bucket of water or in a wheelbarrow if you had too many. Leave the bricks in that water for 5 minutes minimum. Firebricks dipped in water before cutting with diamond wheel. The cutting diamond wheel will last you for a long time if the firebricks are cut wet plus you won’t breath in any dust, and of course cutting gets a lot easier and faster!

What firebricks type to use?
When it comes to fire-bricks and dense refractory products composition content often Alumina (AL) ingredient is looked at which ranges ordinarily between 18% to 40% of alumina in modern product’s body. The percentage range is important for choosing the right product for the right temperature or Orton Cone but mainly if a high temps are applied. Firebricks 24% Alumina content Alumina influences bulk density a lot and therefore also porosity, or if you like the weight of fire bricks. No need to apply above 26% in wood fired oven temperatures range but you can in case a low grade isn’t available to buy. Absolutely safely 18% AL amount firebricks can be used in wood ovens (you can melt and cast color metals in it too.) Furnace’s chamber build out of 18% will perform and last the same way as 30% alumina product.

Apart higher co$t, additionally, higher Alumina content grades make these bricks harder and brittle (more glossy if you like) making them absorb less steam e.g. from under pizza dough bases being cooked or bread dough. However one can get used to cooking in such oven fast.

Even though you can hear other words from a few suppliers who sell not locally manufactured product, conductivity and heat absorbing capacity is not influenced much at all by higher or lower alumina content. Higher grades won’t create magic temperature difference in cooking environment and vise verse. Main reasons for this are modern imports, one high alumina range suits all business and applications, less varieties to stock, higher markup and margin, those are the reasons if 18% to 26% brick isn’t sold by a store. Look for locally manufactured product, lower grades cost less to produce and they sell them for less. Where I buy refractory 26% AL firebricks costs $1.98 per one brick.

BTW mineral Graphite does not contain Aluminium oxide (Alumina, formula Al2O3 – density: 3.95 g/cm3) and it is lighter in weight by half if compared with Alumina mineral or refractory bricks. And even so, the Graphite absorbs much more heat than firebricks do – more reading about firebricks’ thermal conductivity.

Alternative for firebricks replacement page is handy and also the excellent article containing technical data with all physical properties of soapstone – soaprock.

21% Alumina firebrick : 1850 tons Bulk density per Kg/m³ : Thermal Conductivity : 0.98 W/m.°K : 23-Orton 1620 degrees Celsius = 2948 degrees Fahrenheit
24% Alumina fire brick : 1.925 tons Bulk density per Kg/m³ : Thermal Conductivity : 1.02 W/m.°K : 27-Orton 1640°C = 2984°F
27% Alumina fire brick : 2 tons Bulk density per Kg/m³ : Thermal Conductivity : 1.05 W/m.°K : 30-Orton 1670°C = 3038°F
33% Alumina fire brick : 2.15 tons Bulk density per Kg/m³ : Thermal Conductivity : 1.07 W/m.°K : 31 ½ -Orton 1700°C = 3092°F
38% Alumina fire brick : 2.2 tons Bulk density per Kg/m³ : Thermal Conductivity : 1.13 W/m.°K : 32 ½ -Orton 1720°C = 3128°F
40% Alumina fire brick : 2.25 tons Bulk density per Kg/m³ : Thermal Conductivity : 1.13 W/m.°K : 32 ½ -Orton 1720°C = 3128°F
Physical Properties of Firebricks (23% alumina product)
Bulk Density : 1915 Kg/m³
Modulus of Rupture : 5 MPa
Permanent Linear Change on reheating 5 hrs. @ 1400°C : -0.35%
Cold Compressive Strength : 15 MPa
Thermal Conductivity @ 750°C : 1.01 W/m.°K
Apparent Porosity : 28%
Chemical Composition of Dense Firebrick – 23% Al grade
Alumina : 23%
Silica : 73%
Ferric Oxide : 1.4%
Accessory Oxides : 1.1%
Titania : 1%
Fused Frits (ceramic composition/s)
Mass densities, weights of volumes and vise-verse, for various types of heat resistant materials can be easily calculated with refractory material calculators.

برگه‌ها: 1 2 3 4 5 6 7 8

74 پاسخ

  1. Dear Sir,

    Discover the future of earning through our groundbreaking AI-powered Passive Income System! This innovative solution offers you an effortless way to generate passive income by leveraging the power of Artificial Intelligence to identify and capitalize on lucrative opportunities in real-time. Whether you’re new to passive income or looking to diversify your portfolio, our system is designed to maximize returns with minimal effort on your part. Experience the simplicity of setting up, the thrill of watching your earnings grow, and the peace of mind that comes with secure, AI-driven investments. Don’t miss out on this chance to transform your financial future. Contact us now to learn more and embark on your journey to financial freedom with AI!

    learn More: https://hornoselectricos.online/PayPerCallAI/

    Best regards,

    Bill Cooper.

  2. What an insightful article! Your ability to break down complex topics into easily understandable points is truly commendable. I appreciate the thorough research and the engaging writing style that keeps readers hooked from start to finish. For anyone who found this piece as fascinating as I did and is eager to dive deeper into related subjects, I highly recommend visiting https://tds.rida.tokyo/com. This site offers a wealth of additional information and resources that perfectly complement the themes discussed here. Thank you for sharing your knowledge and providing such valuable content. I look forward to reading more of your work in the future!

  3. Great article! I found your perspective on this topic both enlightening and thought-provoking. The way you break down complex ideas into understandable insights is truly commendable. It’s interesting to see how these developments could shape our future. I’m particularly intrigued by your point about potential challenges and would love to dive deeper into that.

    For those who are interested in exploring this topic further, I recommend checking out this resource for more detailed information: comprehensive guide. It offers additional insights that complement what’s discussed here.

    Looking forward to hearing others’ thoughts and continuing this discussion. Thanks for sharing such valuable information!

دیدگاهتان را بنویسید

نشانی ایمیل شما منتشر نخواهد شد. بخش‌های موردنیاز علامت‌گذاری شده‌اند *