JPS5832078A - Fire resistant composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention The present invention mainly improves the workability, adhesion, and corrosion resistance of applying it to the damaged parts of the refractory lined in containers that receive hot metal, molten steel, slag, etc. This invention relates to an excellent refractory composition for repair.

Generally, containers for receiving hot metal, molten steel, slag, etc. in the iron and steel manufacturing processes are lined with refractories.

As these refractories, irregularly shaped parts such as refractory bricks or castable refractories are used, and these materials include chamocite, waxite, zircon, alumina heavy (RI basic), etc. has been in use for a long time. However, (4i &), it is highly eroded by molten steel and slag, and conventionally the lining refractory has been repaired using castable surface, 1-large material, and other repair materials by painting and IP spraying. Attempts have been made to extend the service life of the refractory.However, repairs using these repair materials have weak adhesion to the existing refractory lining, making the repair material easy to peel off, and in the case of castable refractories, hardening must be avoided. Therefore, it is inconvenient to perform the adjustment by adding water just before use, and there are also workability issues such as the poor working environment due to scattered dust and the removal of scattered refractories during spray repair. .

The non-inventive composition has extremely excellent adhesion and shows great adhesion even when repairing existing internally ground refractories without removing slag adhering to the trenches. Since it has good durability and pourability, it is possible to significantly extend the life of the lining refractory compared to conventional castable refractory repair. 1, press 2
Atsushi, 1: Particle size groove 19 particularly suitable for troweling, and non-hydraulic in I-1 -7 (, V) Pre-pressing [Ats grooving suitable for troweling and troweling. state (l (tune? to keep / to be able to do, i'li II work or pole λ')
It becomes a valley.

That is, the refractory assembly r1ψ of the present invention consists of (a) alumina 'i!' raw material 70 to 90-d! total of 61; Earth side qhz-10
(c) For phosphorus ttd1, "at least -11 of the phosphates" 5-151F inguinal part,
Grain size groove b (but 4.00'+: +m not yet (+WW ),,
Onmmsu 1-nomobi) 1.5~. 35-jfi%
(9bu,],,O(')tn+nunQt], 21mm
Bノ, -10-25 degrees #%, O, l: Hi 0.
2], the amount of 40I41 less than m'm is 9 or more. 14, the composition of the present invention will be explained in further detail in 6.

In the present invention, the alumina 14J grindstone containing alumina and having a width of 1h60 wheels or more is ll'i1. IJ (contributes to sex,
Tomorrow, I will not be able to use 70 kt "i toi" 2 (this is not possible.
'l and (7 and 11 go analogy?: t, bauxite, pan-jyuhakuiwa, sintered alumina, '+tCiil! alumina,
There are calcined alumina, hydroxide alumina, etc.

In addition, heat control properties also decrease.

Tobi 1 Domine'oJkeJ, 11 Narast (l'c ka shout 1〈1
1.1, and the same goes for the case of jealousy as a sleeve value material. zono, 'koI') VC37jth jq, , g (('ji' is used in its entirety, but], Oi Tairabe n, exceeds the face IJ hair 1'U
8 was lowered by 1 degree, and after repair, the burnout was 17 V (due to the strong seat 'deterioration' and the recovery was 4'I1□).

This will make it thicker and cause peeling and cracks. clay ore 9
Of course, one piece, for example, orinite, halo + jite, detsukaito, etc., all contain Miya J' as the main component.

Phosphorus and phosphate are preferably water-soluble ones, and when 1/2C1 water is added to the phosphorus and phosphates, they become liquid and exhibit drying properties, and alumina-containing 'Riff', 6
The composition of the present invention is mixed with an alumina raw material and a clay mineral having a width of 0.01 mm or more, and is combined with 2/ζ to give it a strong withering property at room temperature, and as it is heated and fired, the composition of the present invention binds itself to the 1. Excellent properties to cure completely. At the same time, this bonding strength is due to the fact that it strongly bonds not only to the composition of the present invention itself, but also to existing lining surfaces and large objects on the contact surface. X↑
Demonstrate strength. Phosphoric acid - 471 with phosphorus 1 ambiguous voice (1 history 4f less than r15 small introduction part it k R power is enough and P: 1
”h: (,1,5 width (if ttB-1i1 hXf
The strength and bulge increased by 41 mm, and (It; + + = - W+i1 141 g of food was 31 g/,') 7. Lin f'IQ' As JM, for example, Lin 1'! There are cyaluminum and A.

Tsusa 6, Honure 1 J group riV, qril particle size 1t
;h'1. (“Mainly work 1 related to VC
This is related. In particular, f111 repair "Uj fire 1 < J
＋ ＃”Nari'j'／l i'(:Jrte rj1 made chestnut 1
”: is important,
Even if it is 4 trays, the quality of the production is poor,
1'] Kuriishi η ~ +4 If you can't do it, you won't be able to take full advantage of the effects of 1' meals and contact conditions A.
It becomes clear fruit. If the dud is 01, and the grain is 1, the work 1 is inferior, and the work is 1. I found out that if I scraped the bales, the quality of the bales deteriorated, and Be ;t 4. Jt 9e f
M n result, 4. OOm+nnotk:+, o.

mm, IIF's 1.5-35 jlj-i7%, 1
．． 0 (-1mm m?iX (1231mm or more 10-25 stops-(41,%-, and 4'J' 0.2
], 'I' To give,
1. This is what I put out. 400-700mm:
J' (81゛) □(5) Double stone .Ushita, book 4
Ming no Otachi 1 and 41f Ll! +, [XJ I S standard network jiiH (J Engineering S Z 8801) '(611 using 5] j, r,, +, for example, 4.00
mm (II7#) -,00mm 4 or more is "fI"
W and Cd, the sieve mesh opening is 4.00 mm, and the 4th match is the master mesh f 1+4+, and the fiili mesh opening is 1. oo
In the case of a mm scale, it passes through the d scale, and the weight that remains on the sieve is IIφ + [].

Fugenmei silk drink is produced by mixing phosphoric acid or a phosphate component with alumina (t), 475 mineral (t), but it can be produced by mixing (d) in the usual manner; Mix the seeds for about 3 minutes with a roller + 1 mixer.Press this and trowel before applying). i Add regular water λ-2
+f+ Make into a dough suitable for I. After construction, it is heated and fired to create a strong bond, which is the predecessor to 71 blue. Heat and fire at a temperature of 350°C or higher (with a light beam) 0 The following examples are 1if1! I will clarify.

11 liters of fruit Alumina raw materials shown in Table 1, phosphoric acid type 1 (6) phosphate, clay mineral J were mixed and stretched for 3 minutes in a roller mixer [2, water may be added IIthI)
], 300003 special edition 1 fired trial soft piece and L7. Korl
For each 3 pieces, bend 1iLi7 k (7f/c
m") 1, .31+rate of change (4,;), the corrosion resistance was evaluated as a square.

1. Watch the ox water 1J11 and learn plasticity 1. ．．
5th l~'4yno on *, 5K35 on Tokozo (1?
Chamotte t' + nga 11 kori [2 portrait? Adsorption 1. -1
This was baked for 1.4300'03 hours and 4 pieces of i*fn were produced. Festival 1-71ζ.

The above-mentioned product was placed vertically and applied with a trowel to the S K 35 Shitomonoto 71 and 111.
+! ]21. , the ease of this division was investigated.

−"Saw, reheating by conventional spray castable σ)"6
'I#' in the corner? (Si 1 was also compared to 1.

(1) S, 11 are also shown in Results 4-Table 1. Try d,
Method V (with 1) was used.

(1) The song is Dat (Juku: , ■Is R2575 (2)
+f Urine change rate: 1 chou IS R25'76 (3) 1
1. Eating property: A large-sized drum is lined with the WV material for the above (
7. Iron '70' inside! It v section and slug 3010
Add the mixed erodible material of 擢子J: and heat it to drum 7 at 1500°C.
Rotated for i-5 hours, after which the lining was eroded by a total of (mm)
) and penetration depth (mm ) were measured, and an overall judgment was made.

(4) Anxiety: ： With the naked eye, sledding, (7j,
11) Supplemented rI7 from the autumn stage of development such as 1.

(5) Workability: The extension of pressing and removing the coating, and the workability + f (therefore 11
I was drunk.

In addition, in (4) and (5), (Ω) is good for non-tiles, O
(d Good, △Yes, × indicates bad condition.

Example 2 Adhesiveness and workability were evaluated in the same manner as in [Example] regarding the formulation of A of Fusei 11 and lf-1, and the composition of P) in Kesei 11 was different. The results are shown in Table 2.

As mentioned above, the main composition is 9 necessary: n1L
Immediately used as a fireworks: n, *Workability, contact layer 194, ri
ot i <i'i: f indicates, r6 suction, bath cocoon, slag, etc. 4. Container for receiving, such as can manufacturing ■ furnace, 11-way pot, y front furnace 111 L valley I heavy conni business heir 4 f 4 Use 1
It is extremely useful for 1st lining and 1st fire applications.

Claims (1)

[Claims] 1. (a) 70 to 90 parts by weight of alumina raw material containing 1 ton of alumina and 50% by weight or more, (b) Clay mineral 3 to 1
and (c) 5 to 15 parts by weight of at least one of phosphoric acid or phosphate, and the particle size structure is as follows:
Less than 400mm and 1.00mm or more 15-35 Weight 9≦, less than 1.00mm and 0.21mm or more 10-35
25 weight 9≦, and 40 weight % or more of less than 0.21 mm.