SU897733A1 - Raw mixture for producing portlandcement clinker - Google Patents

Description

one

The invention relates to the production of building materials and can be used in the cement industry.

The well-known raw mix for the production of Portland cement clinker, which includes lime, clay and silica-containing components, an iron-containing additive and slag from the smelting of vanadium pig iron, containing 6-10% vanadium and titanium oxides 1 ...

Closest to the proposed technical essence and the achieved result is the raw mix for the production of portland cement clinker, including,%: lime component 74-79, clay coyotent 19-24, iron-containing component 0.5-2, titanium dioxide O, 6-1.0 , zirconium dioxide - 0.6-1.0 and boric anhydride 0.3-0.5 t2

The disadvantages of lime raw mixes are the low grindability of the clinker and the strength of the cement.

The purpose of the invention is to increase the grindability of clinker and cement strength.

The goal is achieved by the fact that the raw mix for obtaining Portland cement clinker, including lime, aluminosilicate,

The first iron-containing components and titanium dioxide, additionally contains zinc oxide, copper oxide and magnesium oxide in the following ratio of components, weight: L:

IS

, Limestone component 60-86 Aluminosilicate com. Component 10-25

,

Iron-containing

.component 0,1-9

20

Titanium dioxide 0.1-2.0

Zinc Oxide .0-1-5.0

Copper oxide 0,015-1,0

Magnesium oxide 0.1-4.0

si, the compositions of which are given in table 1. The mixtures are calcined at 1400 ° C.

Grinding capacity of clinkers and the characteristics of cement on the basis of x are given in Table 2.

becoming a Portland cement raw material mixture of a complex of catalytic additives improves the grindability of the clinker and increases by. mark his hydration activity.

Table 1

Grindability of clinkers. With respect to additive-free clinker, the grindability of which is taken as 100%

Compressive strength, kgf / cm of samples hardened for

3 seconds

7 s 28 s

123

130

Claims (2)

134 5897733 Claims Raw materials for obtaining portland clinker, including lime, ashomosilicate, iron-containing components and dioxide j of titanium, characterized in that, in order to increase the grindability of the clinker and increase the strength of the cement, it additionally contains zinc oxide i) Q magnesium oxide in the following ratio of components, wt.%: K Limestone component 60-86 Aluminacate component 10 - 25, 5 6 Iron-containing component 0.1-9 Titanium dioxide 0.1 - 2.6 Zinc oxide 0.4 - 5 , 0 Oxide, copper 0.015 - 1.6 Q ngt 0.1 - 4.0 Sources of information that are considered in the examination. 1. USSR author's certificate 438623, class, C 04 B 7/38,. 2. USSR author's certificate 542742, cl. From 04 to 7/42, 1977.