Mizzou Mixing & Dry Out Instructions

General Information:

Mizzou should always be stored in a dry place. For best results material should 50°f- 70°f before use. 

Any forms, or backing materials should be waterproofed before use. Absorbtion of water can result in reduced flow or effect the setting of the product. Forms should be stout and water tight. 

This product is designed to be poured, spread, or handcast into place. All equipment used to mix material must be clean. Only water suitable for drinking should be used for mixing material. 

Water addition & Mixing Requirments. 

Mizzou requires very little water to achieve proper hydration. Adding excess water will cause poor outcome in finished product. 

1.45 ounces of water per lb of dry Mizzou

7.28 ounces of water for 5lbs

14.50 ounces of water for 10lbs

29 ounces of water for 20lbs

It is very important to adhere to the water amounts listed.

If you are lining a forge or furnace, mix your Mizzou in small batches at a time. 1 to 2 lbs at a time.

You must mix/stir material for 5 minutes. This is required so that the material can be properly hydrated. 

Once mixed the Mizzou can be applied using many means. I personally find that a paint stir stick works well for both mixing and applying the material. 

You apply the mizzou directly over the ceramic fiber blanket the same way you would put icing on a cake. Do not try to trowel to a slick finish. Try to keep your coats 1/8"- 1/4" on the forge side walls and ceiling. Much more than that is not needed.

Work in small sections at a time. One helpful tip here is to mist a small amout of water on the ceramic fiber blanket as you work. It will help break the surface tension making the Mizzou easier to spread. DO NOT add a lot of water..just light mist. Drenching the wool will cause issues with the Mizzou.  

Work with gravity not against it. Start on the sides and top of the forge. Saving the bottom for last. Floors may be cast as thick as needed, but coating over ceramic fiber blanket is a better insulator. You can always lay a piece of split firebrick over the coated fiber blanket. 

To maximise strength and density, the castable should be placed using a minimum of water. 

Air Curing

 At temps above 59° keep surface damp or covered for 16-24 hrs or until a hard set has developed. Best results are achieved at temps 86°f-113°f 

Keep material from freezing during air cure, and preferably until a dry out can be intiated. Freezing of product will cause structural damage.

Dry Out Schedule. 

Heating and cooling refractory structures can be complex. When preformed by the client they themselves are responsible for the end result. The following is given in good faith for guidence only. 

Bring forge temp up from Ambient to 250°f slowly(104° per hour). Hold at 250° for 7.5 minutes per 1/4" of Mizzou layer thickness. 

Let forge cool completly down. 

Bring forge temp up slowly(104° per hour)  to 250° then increase forge temp slowly (104° per hour) until you reach 482°f. Hold 482°f for 7.5 minutes per 1/4" of Mizzou coating thickness

Let forge cool completly down.

Bring forge temp up slowly (104° per hour) to 482° then increase forge temp slowly to 1,022°f hold temp for 7.5 minutes per 1/4" thickness of Mizzou coating. 

Let forge cool completly down. 

Your forge is now ready to use.