Frequently Asked Questions
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No matter how you landed on our website, if you are still browsing and need to make any enquiries, please get in touch with our customer service team . Meanwhile, we have consolidated a list of several Frequently Asked Questions (FAQs), based on our interactions with customers and potential customers. You may find the answers to a majority of your queries here. If we haven’t answered your questions on this page, please feel free to get in touch.
For more information on how we can serve your company, call us at 713-395-4050, or fill out our online form and we will get back to you soon.
What are the types of rotary kiln?
Rotary kilns are classified based on their length-to-diameter ratio, which distinguishes between long kilns and short kilns. Dry kilns, with a shorter length-to-diameter ratio of less than 16, are categorized as short kilns. Wet kilns, typically longer with an aspect ratio of 30 to 40, are used in different applications requiring longer drying durations. Spray kilns fall between these two categories in terms of drying duration. Additionally, rotary kilns are specialized for specific industrial processes, such as cement production, lime calcination, mineral processing, waste incineration, and specialty applications like producing activated carbon or titanium dioxide. Each type is engineered to optimize the thermal processing required for their respective materials and applications.
How Does A Rotary Kiln Work?
A rotary kiln works by using extremely high temperatures combined with controlled retention times to induce chemical reactions or phase changes in materials. As the material moves through the rotating, inclined cylinder, it undergoes these changes at specific temperatures necessary to achieve desired qualities or to oxidize components, leaving behind valuable material. Rotary kilns can be direct-fired, where the material contacts the process gas directly, or indirect-fired (calciners), where the drum’s external heating causes the reaction. This design ensures thorough mixing and efficient heat transfer, resulting in high-quality thermal processing.
Rotary kiln furnace – What is it?
A rotary kiln is a high-temperature heat treatment furnace for metal and ceramic materials, widely used in industries such as cement production, lime calcination, and the manufacturing of metals like iron and zinc. Unlike general heat treatment furnaces, rotary kilns offer advantages such as reduced uneven firing and streamlined manufacturing processes. The basic structure consists of a cylindrical, rotating vessel that operates continuously at temperatures typically ranging from 800°C to 1400°C. The kiln’s slight incline allows materials to move through it via a combination of gravity and rotation, ensuring uniform heat distribution and efficient thermal processing.
Do you carry trunnion rollers in stock?
Yes, we do. We have almost all the popular makes, such as Allis Chalmers (AC), F.L. Smidth, Polysius, Traylor and more.
Do you have the bearing housings?
Yes, we carry several makes of bearing housings, including Allis Chalmers (AC), F.L. Smidth, Polysius, Traylor and more.
Do you carry kiln tires?
Yes, we do. Once you provide us the OD ID and face width, we can customize it to your requirements.
Do you carry kiln gears?
Yes, we stock kiln gears from all the leading manufacturers.
Is there a warranty on rebuilt items?
Yes. Based on the item, we offer between 1-2 years of post-installation warranty.
Do you carry gear reducers in stock?
Yes. We have a large inventory of reducers from Falk, Lufkin and Dodge, in addition to several other well-known brands.
Do you purchase used equipment?
Yes, we trade in both, used and new kiln parts. If you wish to get rid of any used equipment, we would be happy to evaluate and make an offer.
Do you purchase complete plants?
Yes, we do purchase complete plants.
Who do you currently service?
We service several companies around the USA, Canada and Mexico. We can supply a list of references, if needed.
Do you customize a part or component or entire machinery?
Yes, we can custom build any kiln component or rotary equipment as per your specification. We also provide an initial mock-up before delivering the final product.
What is your current service area?
We currently serve a number of companies across USA, Canada and Mexico. We can supply a list of references, if needed.
Do you have a returns policy?
Do you charge for deliveries, in case of returns?
No. You do not have to pay for any pickups or deliveries, including returns.
How much discount can I expect on your catalog prices?
We offer highly competitive pricing. You will save approximately 40% to 50% on all our rebuilt and reconditioned parts, as compared to the OEM prices.
Do you provide demolition services? If yes, how does one go about it?
Yes, we do provide demolition services. However, we highly recommend you get in touch with an associate so we can talk in thorough detail about the equipment size, your location, price point etc.
What if you don’t have a item or equipment in stock? Could you call for it to be restocked? If yes, how long does that process take?
In the occasion a particular item or equipment is not available, Kiln Tech can make arrangements to provide you with the item or equipment. Get in touch with an associate to find out what information you need.