SU18246A1 - Method of making cement from blast furnace slag - Google Patents

Description

E5Best, preparation of cement from house slag, lime and soluble glass.

The proposed method of cement cementing differs by the fact that, besides soluble glass, soda is added in the same amount as the last glass.

A conventional slag brick, made from pre-granulated and ground blast furnace slag, the sub-pattern of the composition, with the addition of calcined lime in commanding from the weight of the slag, is characterized by the fact that it is covered and hardened within 3 to 6 weeks and when cured, it does not differ in crush strength imposed on a normal building brick, and even more so on a hardened cement mortar.

In order to accelerate the setting and hardening of the specified lubricant, as well as to impart the properties of portland cement mortars to the proposed method, an additive of equal parts of soda glass (sodium silicate) and sulphate is added to the mixture from which slag is made. rub in quantity

„X:

(samoyedbolshe) from the weight of the above nute mixture. In this case, the first mixture (prepared from crushed granulated lime slag) must be ground to match the grinding of Iotland cement (that is, passed through a sieve of 4900 holes per sq. Cm); As for the additive (from lumpy water glass of sodium sulfate), grinding it is sufficient if the powder passes through SITO 900 holes. on apt. see. Then both JB mixtures of the above quantities are intimately mixed and mixed in either a barrel & bag or. The powder mass prepared in this way corresponds to all the properties of Portland cement: in time with being wobbled — to the condition of volume, crushing resistance and crushing, and so on. The peculiarity of the proposed method is that blast-furnace slags, unsuitable for the manufacture of slag brick, after adding more (than 4-5 / o) amount of lime and additives in the above-mentioned droyor can be used to: responsible for cementland cement.

The subject of the patent. .

Cflocog of preparation of dement from submogenically slag with lime and soluble with; hexagi, characterized by the fact that, in addition to the dissolved glass, they are added in equal

with the last quantity of sodium sulfate, mixing such with taken, in a dry form, soluble glass and added the above ground mixture of a mixture of lime and a mixture of blast furnace slag; quantity up to 10 ° / last mixture:;