Kiln oven for sale

Types of Kiln Ovens for Sale

A kiln oven is a specialized industrial furnace designed to produce high temperatures. The main purpose of a kiln is to bake or fire products at very high temperatures. The raw material is also subjected to heat treatment to bring about physical or chemical changes. There are many types of kiln ovens for sale depending on the construction and operating principle.

• Rotary Kiln Oven: A rotary kiln oven for sale is a large and long cylindrical tube set at a slight angle to the horizontal. It rotates slowly and has different zones with varying temperatures. The rotary kiln is mostly used to process massive quantities of material, usually over 100 tons per day. It is suitable for continuous production. The rotary kiln oven is mostly found in the cement industry. A clinker is produced by heating the raw material at very high temperatures. Cement manufacturers prefer using rotary kilns because they can achieve greater quantities of output with consistent quality.
• Vertical Axis Kiln: Unlike the rotary kiln where the material moves downward due to gravity, material in a vertical kiln moves upward through reverse air flow. Vertical kilns are batch processing units. The raw material is heated and treated by hot air flowing upwards. Vertical kilns are used to produce cement, lime, anode coke, and other materials. The advantage of a vertical kiln is that it occupies less floor space and is also less costly to produce compared to a rotary kiln.
• Box or Shaft Kilns: A box or shaft kiln has a vertical steel box or shaft. It is similar to a vertical axis kiln but the design is more rectangular like a box. First, the raw material is layered and charged on top of the kiln. Then, fuel is added on the sides of the walls to fire and heat the material. In box or shaft kilns, the temperature is not extremely high like in other vertical kilns. The reaction occurs at ambient temperature the furnace does not have to be heated up every time a new batch of materials is added.
• Cylindrical or Pot Kilns: In cylindrical or pot kiln designs, raw material is added in a round pot or cylinder with a conical top. The pot has a flat bottom and is usually made from ceramic or metal. These kind of kilns are used to produce pottery, ceramics, and stoneware. Operations in pot kilns are batch type. Once the batch is heated and processed, the kiln has to be cooled down and the processed material is taken out.

Specifications & maintenance of kiln oven for sale

Industrial kilns are available in several types as listed above, with varying capacities. Some ovens have a default temperature control system that can help regulate the heat;

• Wood-fired kiln: Depending on the availability, this oven burns firewood trees. It may have a diverse capacity from small units to large-scale ones. Some wood actually helps achieve a specific color in the pottery. Larger versions may take a week to fire.
• Electric kiln: It ranges from 100 to 1,500 liters for small-to-medium sizes. Bigger ovens can be over 5 tons in weight and, thus, have bigger capacities. Most electric types for sale here have a built-in temperature control system, which auto shuts down the oven when it reaches a preset temperature.
• Gas kiln: It ranges from 100 up to about 6,000 liters for small-to-medium sizes. Bigger sizes can be over 10 tons in weight and capacity. Gas ovens are more environmentally friendly than electric ones, but they may heat unequally, leading to uneven quality pottery or ceramics products.

All oven kilns require a few maintenance tips to sustain their lifespan. Maintenance for all types of kilns is as follows:

• Check the door seals or gaskets frequently. Look for any cracks, leaks, or wear and tear. Repair or change the seals when required.
• Also, inspect the electrical wiring and connections. Look for loose or damaged areas. Ensure that all insulator parts are intact. Do the same for gas or burner lines.
• Depending on the type of kiln, oven operators should follow the prescribed cleaning processes. This keeps the relining of firebricks in good condition. It also helps remove any residues, debris, or blockages within the kiln that may affect airflow.
• Take care when operating the kiln. Ensure there are no sudden temp changes. Abrupt heat changes may crack kiln parts or pustule ceramics products.
• Lastly, if the kiln has any moving parts like bearings or chains, lubricate them as per the instructions.

Scenarios in using kiln oven for sale

• Pottery and Ceramics

  In the pottery and ceramics making industry, both artistic and functional pieces such as vases, mugs, plates and sculptures are created. To ensure durability and achieve the desired finish, a pottery oven is used to fire the pieces. This is done by initial drying and bisque firing and then by glazing and final firing.

• Glass Art and Murano

  Glass is shaped and art pieces are created in the glass making industry by using a glass kiln. The glass material is also hardened, stabilized and made more chemically resistant by using a glass kiln. In addition to that, a glass kiln can also be used to fuse several pieces together and to create the beautiful multi-colored glass effect known as kiln casting.

• Metal Casting and Forging

  In the metal casting and forging industry, the metal pieces are initially heated to create a desired shape by using a mold with the help of a metal kiln. To enhance workability, strength, and resistance to corrosion, metals are often heat-treated. A metal kiln is frequently used for this heating process.

• Jewelry Making

  In the jewelry making industries finely detailed and small pieces are often heat up to bond or as part of an annealing process using a metal kiln. In addition to that, a jewelry kiln can be also be used for plating or coating processes.

• Industrial Manufacturing

  Some heavy industries and large manufacturing plants that produces cement, limestone or any other mineral products, commonly use an indirect firing method such as a rotary kiln. This is used for the chemical transformations during material processing.

• Exhibition Galleries

  Many exhibition galleries invite people to come and see the magnificence of artworks that were created by using a kiln, their creative techniques and the beauty of the finished pieces. Some of these exhibition galleries include but are not limited to galleries for pottery and ceramics, glass art and jewelry galleries.

How to Choose Kiln Oven for Sale

The following tips will help business buyers select the ideal kiln oven for their specific needs.

• Understand Production Needs

Business buyers should first consider the type of material they will fire in the kiln. The oven's design and firing process differ based on the material. For example, ceramic and pottery require different kiln ovens for sale than those used for bricks and tiles. Buyers should also evaluate their production volume. That is, they should determine the number of items they need to fire monthly or weekly. A benchmarking of the usual volume helps buyers to not purchase a kiln too small.

• Consider Energy Efficiency

Business buyers should choose a kiln with good energy efficiency. The efficiency will impact the operating cost significantly. Go for designs that minimize heat loss and consider advanced insulation materials used in the kiln's construction. In addition to this, buyers should evaluate the kiln's firing speed and control system. A well-controlled firing process boosts energy efficiency. It also reduces unnecessary overconsumption of energy during firing.

• Think About Maintenance and Support

Choose a kiln oven that requires little maintenance. Look for a kiln with a reliable reputation and good record. Buy from a supplier that offers adequate support and replacement parts. This ensures that any repairs needed down the line can be handled quickly and efficiently. Business buyers should also consider the supplier's customer service. Buyers should partner with kiln suppliers that offer an excellent customer service support network. Consider those who assign a dedicated account manager to each business buyer. This ensures prompt and effective communication so that any concerns a buyer has gets resolved swiftly.

• Negotiate for Volume Discounts

Since seeking a profit margin is the main reason for a business purchase, buyers should try to negotiate for volume discounts. Discounts when purchasing large kiln oven for sale in bulk goes a long way to impact the overall bottom line.

Q&A

Q1: How is the kiln oven maintained?

A1: Clients need to routinely inspect the insulation to ensure it is not wearing out or getting any damp areas. They can check the control box for any loose wiring and test the computerized controls periodically for software updates and other optional calibrations. Also, if the kiln has any exhaust hoods or ducts, those should be inspected and cleaned regularly to avoid any blockage.

Q2: What are the latest innovations in kiln oven technology?

A2: The developing trends of kiln ovens on a global scale show that more and more industries are interested in using industrial kiln ovens with energy-saving technologies and intelligent control systems. Furthermore, the integration of cloud technology into oven kiln machines is making it possible for remote diagnosis and monitoring.

Q3: Does the kiln oven for sale come with a warranty?

A3: Most suppliers offer a warranty for the kiln oven and provide additional after sales services. Buyers can ask about the warranty period and coverage.

Q4: Are there any safety features in a kiln oven?

A4: In many modern kilns, there are safety features like emergency shut-off systems, pressure relief valves, and thermal insulation to prevent accidental exposure to high temperatures.