SU718397A1 - Raw mixture for producing portlandcement clinker - Google Patents

Description

The invention relates to the composition of raw mixes used in the wet process for the production of portland cement clinker. A known blend is used to produce a port of and cement clinker, including carbonate drip (42-53%) and granulated eectrothermophosphoric slag (47-58%) l. The closest technical solution to the invention is a raw mix, including calcium carbonate and granulated electrothermophosphoric slag in the following ratio, wt.%: Kalsh carbonate 61-64 Granulated electrothermophosphoric slag 36-39 2 A disadvantage of the known raw mixture is the increased tendency to thicken and setting of sludge during storage. The aim of the invention is to prevent thickening and setting of the sludge. This is achieved by the fact that the raw mix for the production of portland cement clinker, including limestone and granulated electrothermophosphoric slag, additionally contains hydrochloric acid or its calcium salt in the following ratio, wt.% 5 Known to 58.6-62.7 Granular electrophosphoric slag36.9-41.30 Salt acid or its calcium salt0.10-0.40 In order to compose the raw mixtures, limestone from the Astakhovskoye field (Karaganda oblast) and gratted Shimkentsky electrothermophosphoric slag are used. osfornogo plant. The chemical compositions of the mixtures (wt.%), Determined according to GOST 5382-73, are presented in Table. 1. Raw materials are ground to a fineness of grinding 8% of the residue on a 008 sieve. Technical hydrochloric acid with a content of; 37.3% HCiB and calcium chloride of the brand -: T-T: 1 .Z Example I are used as additives. raw bolds include limestone (58,%) and granulated electrothermophosphoric slag (41.25%). Hydrochloric acid is introduced into the slag from the calculation of its content in the p mixture, 15% (in terms of Sanne NCC). The results of the change in the fluidity of slag storage under the static conditions are given in Table. : 2.- -. Example 2. Sludge is prepared from raw material sales, including limestone (59.72%) and YH electro-granulated slag (39.92%) granulated. The salt amount is 5% in% 6a in t0naJK and in paCTeVff fleece it in a mixture of 0.36% (in this report, for the content of NS). Retreats AgwayG & . NECH — Plasma acoustics are stored in Table 1 under Statistical conditions in Table 1. ZG -... fl mer. 3. Prepared from raw materials, smtezh, including limestone (, 0%) and granulated electrothermal phosphoric slag (40.6%). Salt sour, v. , „, V,

718397 that is introduced into the raw material, ground by the method of joint dry milling, willow, and calculating its content in the amount of 0.4% (in terms of containing {NDS). Flow rate; amov; at the beginning it is characterized by the data given in table. 4, Measurement 4, Preparing a raw mix, including limestone and granulated electrothermophore slag. A water solution of calpne chloride is introduced into the raw ales in the amount of 0.1 ± 0.4%. The composition and properties of the sludge are given in Table. 5. K can be seen from the data in Tables 2–5; when the salt cylate or its calcium salt is added to the sludge mixture, the flowability of the pellets increases and their lifespan is lengthened. So for example, when added to -. a mixture of salt kigspoty in the amount of 0.15–6.4% of the flow rate EU: T |. sludge increases by 4-v34%, and the life span is 0.4-3 ra-. aa When 6,1-О, 4% calcium chloride is introduced into the mixture, the fluidity of the sludge increases by 6-12%, and their lifespan is 1.5-1.7 times. T a b l i and a 1

From - 53.30 3.04 1.08 b, 5d O.23 known to 44, Y5 40.2 1.74 0.33 3, O5 2.16

4iii ((44i; «- 4 (B4.

41.67

Table 2

Table 3 5.99 O.24 O, 361.65 Formula and 3 o b ete n ia

Raw mix to obtain a port of land-cement clinker; In addition, granulated electrothermophosphoric slag, characterized in that, in order to prevent its aggravation and seizure, oHia additionally contains salted iBHoiotjr or its calcium bbl with the next component, the content of the components, wt.%:

7183S7

Tabliaa4

Table3

Known for k58,6-62,7

Granulated and ectrophmophosphoric shyak36,9-41.30

Sol does not acid her

/

Calcium salt. 10-0.4

Sources d1a | yurma1shi,

some in vnmmayyo with ezhszhf-tze

1, USSR Author's Certificate 289068, cl. C O4 B 7/14, 1969.

2. Authors certificate of the USSR. 299475, cl. C O4 B 7/14, 1969.

Claims (1)

Claim Oyarevaya mixture to obtain port- _h pandpementnogo clinker comprising "granular limestone ³⁰ elektrotermofosforny Shpak, wherein u and I with I that, with Peña prevent its thickening and setting it further. contains hydrochloric acid 35 or its calcium salt in the following ratio of components, wt.%: Limestone 58.6-62.7 Granular electro-thermophosphoric slag 36.9-41.30 Hydrochloric acid or its / calcium salt 0.10-0.40