Hard Bricks : Dense Fire Brick

Hard Bricks : Dense Firebrick Refractories

Dense Fire Bricks are also known simply as hard brick. These bricks are very heavy at about 8 pounds each. They are highly refractory with high service operating temperatures. The color varies some but are all yellow tan to light orange in color.

Hard Fire Bricks are resistant to abrasion and chemical atmosphere so they are found in the fire boxes of wood and salt kilns, and power plants.

There are many stock shapes for building complicated forms and arches.

Even fairly simple kilns and furnaces require a combination of different shapes to build.

Let the experts at Sheffield help you get the correct fire bricks for your project or repair. We provide fire bricks in a variety of shapes and temperature ratings to suit even the most demanding applications.

Refractory shapes include precast cement and fused or sintered refractory products that are formed prior to installation in furnaces, boilers or other high temperature equipment.

Refractories are hard, heat resistant materials and products such as alumina, silicon carbide, fire clay, bricks, precast shapes, cement or monolithics and ceramic kiln furniture. Ceramics and refractories have high melting points are suitable for applications requiring wear resistance, high temperature strength, electrical or thermal insulation or other specialized characteristics.

Refractory fire bricks, blocks, and tiles are stacked to form insulating furnaces, boilers or other thermal process vessel walls. The hard bricks are usually cemented together with refractory mortar.

Shown above right is a new gas kiln made with fire bricks from Sheffield Pottery by the late John Zentner of New Hampshire Potters Guild.

Call to special order any firebrick sizes not shown. Discounts are available when ordering 500 or more fire bricks.

HARD BRICKS

CHOOSE HARD BRICKS FOR OUTDOOR APPLICATIONS : Wood Kilns. Soda Kilns usually require 70% alumina hard brick below.
Give us a call to speak to one of our experts to help pick the correct bricks for your project.

HIGH HEAT DUTY-

Economical high-duty firebricks will go to cone 31-32. Suitable for backup linings, and other areas that encounter moderate operating temperatures. Not suggested for abrasive conditions. (equivalent to Empire) 2 1/2” except where * (3”)

SUPER DUTY -

Exhibits high strengths and low shrinkage, good resistance to thermal shocks. Can be used as the inside lining of kiln. Will go to cone 33-34. (equivalent to Clipper) 2 1/2” except where * (3”)

70% ALUMINA -
A chemical and ceramic bonded 70% alumina brick designed for the following applications: Electric furnace roofs, ladle bottoms, side walls and slag lines, rotary kilns, cement kilns, torpedo ladles, tundishes, and hot zones of lime kilns. Cone 38.

Note: there are no drawings of the 3 inch series bricks so here are the dimensions:

		HARD BRICKS
	TEMP--->	HHD	SD	70%Alum
Shape	Size in Inches
Straits	2.5	LVHHD	LVSD	LVA70
	3	LVHHD3
Wedge #1	2.5	LVHHDW1	LVSDW1	LVA70W1
	3
Arch #1	2.5	LVHHDA1	LVSDA1	LVA70A1
	3
Arch #2	2.5	LVHHDA2	LVSDA2
	3
Arch #3	2.5		LVSDA3
	3
Soaps	2.5		LVSDSO
	3
Side Skews	2.5	LVHHDSS48
	3
Feather Edge	2.5		LVSDFE
	3
Splits	2.5		LVSDSP
	3