DE396689C - Production of hydraulic binders or other building materials - Google Patents

Description

Production of hydraulic binders or other building materials. So far, mostly granular slag has been used for the production of binders been. The aim of the invention is to circumvent the grain and woodland material per se, so as it is in coal preparation and from combustion and from iron ore smelters (Basic blast furnace operation, Saurer Martin operation) and the iron ore processing results, directly as raw materials for the production of binders and building blocks to use.

The invention is based on the knowledge that the different sizes Content of calcium oxide, silica and other hydraulic components in the The above-mentioned waste materials, if mixed appropriately, alone suffices to to cause a setting, possibly with the desired greater setting capacity or increased strength by adding additional amounts of calcium oxide can be.

The decisive factor for this finding was the finding that in the the aforementioned waste materials, be it according to processing of raw materials; be it according to the dump storage and the chemical processes that occur here, hydraulic Form components in different amounts. Depending on the desired binding agent or the building block should have more or less setting power or strength you deal with the mixing of the ground stockpile materials in certain proportions with or without the addition of lime or cement.

So z. B. mix 25 percent calcium oxide with 75 percent of the Heap taken, d. H. Naturally burned coal shale (Opuka) on the heap and receives a binding agent which is mixed with the roasting dust that is also removed from the heap intimately mixed, mixed with water and shaped a building block of sufficient Gives strength. With roasting dust, what was previously treated as worthless waste sandy, dusty and discarded iron ore from the roasting processes meant them certain iron ores are subjected to before smelting.

For example, if the aforementioned specific slag is intended for production of this bin .ie means or module are used, it is already sufficient for certain Requirements of the lime content of the slag from the base blast furnace operation, to be effective in connection with certain hydraulic substances of the coal shale tie off.

Of course, in the aforementioned examples, the Manufacture of building blocks uses fillers that are hydraulic in and of themselves Have properties such that they enhance the binding force of the binder. Into consideration In this regard, there are ashes or roasting dust containing coal shale.

Iron ore and granular blast furnace slag are assumed to be known to be processed together on hydraulic binders, furthermore blast furnace slag and To grind fuel ash to a truss substitute and finally fuel ash and to process blast furnace slag on building blocks.

Claims (2)

PATENT CLAIMS: i. Process for the production of hydraulic Binding agents and other building materials, characterized in that deposited in the heap Iron-making slag, burnt-out coal shale and containing slag Ashes and roasting dust taking into account their becoming the desired cohesiveness or strength-supplementing hydraulic substances in the ground state with one another mixed or processed into mortar or building blocks in the usual way with the addition of water will. 2. embodiment of the method according to claim i, characterized in that that in the production of mortar or building blocks as a filler to the one according to claim I added coal shale-containing ashes or roasting dust to prepared binders so that in addition to the hydraulic already contained in these fillers Only very small amounts of pure lime or cement need to be added to substances.