SU1258819A1 - Complex additive to cement slime - Google Patents

Description

The invention relates to the technology of preparation of Portland cement raw mixtures and can be used in cement plants operating in the wet production method.

The aim of the invention is to reduce the moisture of vsham and pshcheunos, to increase the productivity of the furnace and the activity of clinker.

The complex additive is prepared with a mixture of phonates that causes more intensive components in two stages. First, manganese sludge is mixed with a 20-solution of ferric chloride, and then the resulting suspension in a separate container is mixed with DMB and sodium dipinateam. To improve the mixing conditions, the mixture is preheated to 30-C ° C. After mixing, the complex additive is a homogeneous suspension of brown color with a specific RHM odor and a solids content of 23-30%. The amount of additive in the slurry is 0.3-0.8% (dry matter on dry matter slurry). The manganese containing component is a waste product for potassium permanganate (PMK). This is a brown-brown mass with a humidity of 46-65% with the following chemical composition, wt.%: KMn042.5 17.5, MnOj 18-20; KOH 23-25; Si02l2- r5i KjCO, 14.5-18; CaO 15-19,5.

Sodium adipate, a waste product from caprolactam, is a dark brown oily liquid with a specific odor. The concentration of sodium adipinate t in an aqueous solution with a density of 1.21 g / cm is 27-28%.

A 20-30% aqueous solution of ferric chloride is a waste of the Production of ferric chloride with a pH of 1-2 and a density of 1180-1380 g / m. Along with Fed5, the solution contains up to 2.5 g / l of sulphates and up to 2.5 g / l bromine

The decrease in the moisture of the sludge is ensured due to the structural transformations of the molecules of lignosulfonates in

the presence of oxidizing ions. Manganese with a degree of oxidation of Kp and Mn as well as Fe ion ensures oxidation. aldehyds X group o ..

- RC

g | ushshrovki. As a result, the polymer molecules of lignosulfonates accumulate carboxyl groups with high polarity and, accordingly, their effectiveness as a thinner increases. Taking into account that lignosulfonates form complexed compounds soluble in alkali with iron ions, the combined presence of alkalis in the complex additive (in the composition of potassium permanganate production waste) and ferric chloride increases the solubility of lignosulfonates and their surface activity. Increased lignosul activity

dispersion of the clay component, i.e. with a low humidity of the isham, its intensive thickening is possible. The latter is prevented

5 by introducing 5-10% sodium adipate into the composition of a co-additive.

The camper composition of the additive ensures the stabilization of the grain composition of the material along the length of the furnace and, accordingly, a decrease in dust extraction. Sodium adipates, along with MDR, provide improved granulation in the area of the bean and an increase in the strength of the granules. However, as they burn out

5 and, due to the latter, part of the granules is destroyed, which causes a decrease in the thickness of the particles. Complex additive helps to prevent the destruction of the granules in the preparatory zones of the furnace

0 (in the temperature range 300-1100 C) due to intensification and solid-phase synthesis processes. The presence of finely dispersed silica and calcium oxide in manganese sludge causes the formation in the low-temperature interval of an additional amount of calcium silicates, and the presence of alkalines and chlorine in the inorganic components reduces the temperature of formation of the low-basic silicates and alnanta calcium to reduce the formation of alkalis and chlorine. by formation in the temperature range of 400-800 ° C in the contact areas of double salts of type K SASO,), etc.

five

,

50

The complex additive intensifies the process of granulation in the sintering zone. The introduction of iron, manganese, chlorine into the composition of the raw material mixture increases the amount of liquid medium, reduces the temperature of formation of the liquid phase and its viscosity. The latter factors, along with the stabilization of the grain composition of the material, facilitate the formation of a wash, which, in turn, leads to an increase in the durability of the lining, the growth of test results are presented in Table. 13.

Complex additive, including

the use of the furnace and its annual productivity. Clinker doping: manganese increases clinker activity. In this way,

complex composition of inorganic manganese sludge, 20-30% rastponentov complex additive, chloride of ferric chloride and adipinates

bakes not only an increase in the effectiveness of sodium, it allows to reduce the humidity

The action of the ADD as a thinning-sludge by 5-6.9% prevents the hall, but also affects all stages of the physical-thickening of the sludge during storage, chemical transformations, providing 10 irrevocable 35% final stabilization of the regime, increase productivity ovens and improving the quality of the oven by 4.5-10%, increase the activity

clinker ducting 56-62 kg / cm.

Table

Note. The spreadability in all experiments was

 mm

12588194

The test results are presented in Table. 13.

Complex additive, including

table 2

Compiled by G. Rakcheeva Editor I. Egorov Tehred A. Kravchuk Proofreader I. Erdeyi

Order 5084/24 Circulation 640 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Continuation of table 2

T a b l and c a 3

Claims (1)

COMPLEX ADDITION TO CEMENT Sludge, including sulfite-yeast mash and manganese-containing component, characterized in that, in order to reduce sludge and pepeunos moisture, increase furnace productivity and clinker activity, it contains potassium permanganate and additional adipates as a manganese-containing component sodium and 20-30% solution of ferric chloride in the following ratio of components Comrade additives, wt.%: Production waste potassium permanganate 15-20 Sodium adipates 5-10 20-30% solution S ferric chloride 10-15 / l Sulphite-yeast Vj mash Rest GT ND SL 00 00 ζ © '' L I .. '·