DE2611735A1 - Light wt. bricks prodn. - by mixing sawdust or brown coal with clay and vaporising during firing - Google Patents

Abstract

Method comprises mixing a vaporisable granular material with the clay. Sawdust, brown coal etc. is added in measured quantities and comminuted during the mixing, water or steam being added as necessary. The mixing can be repeated in a buffer store before the material passes to the brick pressing machine. The granular material previously used was styropor. Sawdust is much cheaper and does less environmental damage.

Description

Process for the production of lightweight bricks

The invention relates to a method for producing light bricks using burnt clay or clay and with the addition of a gasifiable one Granules.

A well-known method of this type is that the clay or Clay a plastic granulate, for example Styrocor, beige -mixed, which partly while drying, partly gasified during the firing of the brick. The known procedure has various disadvantages. Since the styrofoam is expensive, its use the brick price increases. In addition, the styrofoam develops when the bricks run harmful gases; the known method is therefore harmful to the environment.

The invention is based on the object of a method of the above Way of creating a lightweight gel that is cheap and environmentally friendly is. This object is achieved according to the invention in that the loam or clay via at least one metering machine with a material such as sawdust, lignite or similar and that the mixture is then mechanically crushed and processed mixing water is added in liquid or vapor form as required.

The new method has the advantage that the attached, calibratable Material when firing the brick to generate the required firing temperature contributes and thereby saves fuel, especially heating oil.

In addition, the generated in this way inside the brick Thermal energy is used with a very high efficiency in contrast to that Energy supplied from outside and bypassed the brick. Because that's sawdust a Is a waste product and therefore has a low price, this fact also contributes to make the brick cheaper.

In contrast to the well-known Styrofoam admixture, the admixture of Sawdust or lignite have the advantage that the individual forms in the brick Cavities are very long and have a narrow or elongated shape, which means irc causes the brick walls to dry out quickly and remain dry.

In the figure is the method for making Leichzieglen according to of the invention shown schematically.

Loam or clay is taken from a pit and made into a 3eschicker promoted, in which sawdust or lignite or similar is promoted at the same time. in the the figure shows two box feeders; however, it is also possible that only one or more box feeders or other feeding machines are used will. The material is transferred from the feeder for the purpose of mixing and reducing it a pan mill led to a rolling mill, with water in liquid as required or steam forn is added. The addition of water can also be done before or after are executed.

From the rolling mill, the material is sent to an extrusion press with automatic cut-off, where the brick is formed. On that the shaped brick is used for Drying in a drying chamber that works at about 1000 C, conveyed and from there conveyed into the combustion chamber, which works at approx. 10,000 C.

Claims (2)

P A T E N T A N S P R Ü C H E 1. Process for the production of light bricks using burnt clay or clay and adding a gasifiable one Granulate, which is not shown that the loam or clay over at least one metering machine with a material such as sawdust, brewing coal, etc. is mixed and that the mixture is then mechanically crushed and processed mixing water is added in liquid or vapor form as required. 2. The method according to claim 1, d a d u r c h g e k e n n z e i c h n e ts that the material is in an intermediate buffer or dosing container mixed again and fed to compression and shaping.