JPS5943395A - Radiation shielding material - 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 relates to a shielding method for preventing damage caused by leakage of radiation and radioactive substances.

A wide variety of equipment is used to remove radiation in the medical field, for example in the operation of a furnace. 1
Conc')-) /11 In general, the main structure and high-rise part of the construction site is used at 1°, and at the same time, the most important cover charge for radiation facilities is -1-7.・ra11℃・ro. However, in order to increase the calyx covering ability with L7 concrete, the problem is that the thickness must be considerably large. Since the transmittance is about 6, it is necessary to increase the thickness to 11 yen and the le to Ljx.Furthermore, concrete 1.
is general K. Although it depends on the storage conditions, if the continuation ability is low due to the large change in density, F-(・5-point is the force,
-〇sr) Also, the issue of JI cracking in concrete required note 7 sound. Inventor 5 > lr, t
-, J: ') 17. In order to overcome the drawbacks and drawbacks of the conventional Conch IJ as a shield, we developed a completely new IJ and conducted repeated tests.

As a result, a by-product of the steel-making burial process is Q$.

Steel slag such as filter dust (gas ash) and steel slag (1) are mixed and heated at a specified ratio (-1, then cooled and solidified, 2 and then solidified as 1-4), which has high compressive strength and superior durability. , Part 1-・
, Tokiyabu f ton force 61 and weight j 7 t 7 count 1]
, r and j are relatively high h (ray 1 coverage 611 angle)
I found Szu again. Warehouse invention (earth knowledge W, V based C
1, r, sa11 a) Takumi - To//Komonohiyaru.

Dash rope 1. The present invention provides a composition containing 51 (liquid slag 11") parts by weight, Φ' (q1 slag 3 = 6 parts M2 parts and f heavy color 2 to 3 parts Jn, rR parts). 95
~13 (+ t'', melt Flh! Kneading (7/, - after cooling and solidifying to become C, 1.4Z) Radiation and radiation +' [shielding of object γ1, prevention 11-moon S11 .1-
Romonodet,ru.

Steelmaking dust (gas family) used in the present invention
j Koro 2 I landing place, electric furnace 1. Steelmaking vortex 2,
For example, open hearth dust (open hearth gas group) contains about 68-89% iron oxide, and converter dust (converter gas group) contains about 84-119% iron oxide. Sift with a fine powder of 05 to 10 pieces.

Next, the steel slag used in the present invention is a blast furnace,
Slag Steelmaking slag and other slags produced as by-products during ironmaking are referred to as -1゛.

The chemical composition of blast furnace slag C varies depending on the quality of iron ore, but the range of the main components is S! 0730-4
(1%, Ca035-50%, Al103': r
~2 Gme, Mg05~1- +1%, l”e03
%, Mn03. Steelmaking slag is 81'-furnace slag and converter slag produced during the steelmaking process in open hearth and converter furnaces. An example of its chemical composition is shown in the table below.

Prevention of aging and radiation caused by radiation and radioactive substances of the present invention 1. +6 to profit
As a useful material, ``No. 1'', Eel Steelmaking Dust (Gas Group)
The main lj Rizan that uses elk steel slag contains iron (iron oxide) and nail metal.
1. The bonding force with sulfur is large, and the synchronization stability is improved by melting and cross-talking under heating.11. This is because it has a powerful effect on shielding radiation from radiation. L2 Kamokonemo also has the advantage of making steel (because it is a by-product of 7 culms, the cost is low and the by-product can be used effectively).

The sulfur used in the method 15 of the present invention is not necessarily of high purity.
7) In addition to the necessary side 1, by-product sulfur produced from desulfurization processes such as coke manufacturing, iron manufacturing, and petroleum refining processes is also problematic.

In the Jj method of the present invention, the lt-made θ-row das l, steel slag, and sulfur are transferred to 1 to 3 multi-layered parts = 3 and 6-layered M parts = 2□
Mix at a ratio of -a heavy IT1' parts and mix at a predetermined temperature I (L).

If this steelmaking dust exceeds the triple M section, 1. The weight is low, but the strength and viscosity are low F-1. How to get stuck σ
) Because the density is bad, the cocoon is hard. −・
On the other hand, the viscosity improves below 1 heavy wind section f+”= ,Ll
-The weight becomes smaller.

If the steel slag exceeds the 6-layer part), the viscosity 1'1' decreases and the compressive strength does not appear, and if the weight is less than 3-layer M part, the weight is small and the two forces are bad (7 '、Cru.

-・Jte, sulfur: If the triple M part is I, l, the compressive strength will be low.
゛4 Steel slag, sulfur, etc. (J-7)
), add 7, 1 minute, (viscosity F to σ), 41 is not obtained, (A).

? H1 degree +, t, 1iTJ regular 95-, L 30 T
,: If you're smart.

95-12 (1'c-: Soluble Ml+! Temperature i
+'95'C, if the knee is low, the molten ri (the viscosity of the molten sulfur heats up at 7 degrees, is 1.5) (τ1.7-1).The viscosity of the molten sulfur is 12 (heated with l Y-saw to 7i5 height, over 120℃) and during melting (
Possible generation of S02 gas from culm 1ft7'+'z
5ppm', s. Etsu) 7. l::-cr) SO, Gasno-Hatsugyu (de-hanu-melting (+iji Pj c'>withering 1
1T', l+''=inferior (1: I C?l?, melting is not [-min and/J, Z)σ) and 1 limit HI 3 +l t
"Ij River")',-4' 7). /, [, Safety and health 1-kaj, l:), S o2p> Occurrence 1'!
'! 55111m1 b, I l':' 11 suppressed i.
ρ) is ljf t/℃・.

The melting and heating of the molten tilil! When the viscosity of the mixture reaches 1.5 mm, this is done at a filtration stop, but usually within 5-30 minutes).

Z).

Next, mix the good yellow, the tri J' strike, and the steel slag ball! I! Mixed gauze 1-7, preferred operation for cold-rolling 4-2) 5 Method 4 is described.

First, add sulfur to the container.1. -((15~・I :l
(Heat to 12' (melt it into liquid state.) Steelmaking dust and steel slag are heated to 4'95~1 in separate containers.
:3 (heated at 1°C for t7, mixed with the above-mentioned melted sulfur, heated to 95°C).
Stir thoroughly until the cold body becomes viscous at ~130U.

In this way, the mixed melt TL consisting of steelmaking coost, steel, slag and sulfur can be cooled by natural cooling to shield 1 to 2,000 radiation and radioactive substances, and to prevent radiation and radioactive substances. .

・: q), the solidified product after cooling also has a hN degree of 95 to 130℃
2) The IJF shrinkage strength is further increased by heating to 2).

In this way, L'CC101 is 11c weight 3.4
10-:l, 6 5 (1-'(: :'ulti
4. Death 1. 1. [12' iari 1. n
l middle 72, ? Toshiru, high passing ability lJ)-SaJ
l-(ite) pS Konkuri 1゜21, li, ki [゛]
Ge-iguJ also lkηJ pure p) i place) i'if: To force, show -4゜na, JEM %i h゛I゛ is 5 f)0 ''/'rJ '', I: ( D
(> +7) J+1'frl I'TJt,i(
Next work 4vH1gu11/, -, tt'l notification 44 Shi'11
tL゛(-JljIr〕ft=,.

PiO,θ)ノI','? f'l:DolciM
(>I and product t'l: I, -1g]1te).

The shielding of the present invention is applied to l! 1j1.14 quick drying M + top adhesive 10-1 times Jt't l, ro. 1-77, Crab Cfi'z, 'll's storehouse of sexual objects, 1i (7
Shooting gentleman's use room σ) Wall y + paper twist vibration j city, change (doburo・``yori crack te) 1 generation people 2 pigeons frf ro 111 liquid status l
-,, -C1i (1))) +t 11 to 6
Nino Makoto - 44) Kotometsu 1' made). Zono/, :'
T? ＋It It's important to be efficient and do it in a short time, so it's economical (it's highly professional).

Solidification shrinkage rate of the middle one and two (+5・-7'X I
O-' and normal hookley-1・freedom+1+4 contraction ratio and l-
1 (I, etc. 12 (indicates direct),.

The present invention (') in 5 (IQ, il, i +
l] IkV U Jt6.1:, Ac7: Just to shield the hQ injection material /, "<, Preventing the leakage of the 11 materials in storage IL,'r-come),,l- 2 or 7゛ν21) and Fr-furnace handling (i, security work, medical care 1.f-('-
Occurrence 4, ] it (,! I l 1; Industrial waste '1 of course) and 1. very suitable eA;, 7,.

The present invention is carried out as follows: 11υ [well-5 cut [゛, (
"Details" (11-1).

Example 1 450 g of sulfur (approximately 11 degrees C) was taken in a reaction vessel and heated to I O'I, : with a flaming heat source to melt it in a liquid state. 'i, WC'! 5 to furnace J”1
) (fill formation: 5i07 5..12%, (
-*05.5%,A/,,,031.59%,F
e2O331%, Zn011, Mg03.9) 2
00 g and converter slag (composition: 5i0233.4%,
(1, +041%, △t203.L 4°5, Fe
2o34.0%, Mg(-) 6.0%, 81.0
%, MgO+1.7chi, T'+021.5%) 115
0g: Return to another reaction vessel, fj waste heat source 11.
(l T', K 1111 After heat treatment, n'f i(4
0) Heat / 1-Liquid II A on the back with J1 and Numa1 go L7.Hold at 110℃ while the viscosity is being developed.
Wodekaki+, Zota. Next, this melted and kneaded material was mixed into 1 cm×
2 (ln++
Manufactured by Boichitsuki-LX.

The compressive strength of this product is 11U1, 3.595 mm, and is 650 N/C,a. .

Example 2 Sulfur (70 cm) 4 fT 01 4 reaction volume p = b 1 1 flame heat source 111 m] Add ~ 1" [
゛Melted in a liquid state, 1, -5-, J Te converter das I- (ax 11 Seiji Iil, 5-i custom, Zn 3%, A4n
1%, Pb O, 4chi, Co O, 0! 'ichi) 2
1) L) F! /-11+i furnace slag (composition: 5i
0210yQbegCa047. ,! 1 beg A, /20゜15
Chi, ■ button 020.7%, 84g072 beg so, o g person, Mn05.2chi, go1021-, 4chiro1 (10g
Place another piece of paper in a container, heat it with a flaming heat source, and then bury it in the same manner as in Example 1. Melt it, add it to the back, and mix it in. (Example 1 and the 111th shift of the rotation section)
M, 1 (Noj city good get no, 2. , -L/
7) moo)o> , 11; @ ke 3.4 +
5, JP 1+r is 51.0”/rn
i becomes 2, s-gowa””” = lKn ff1.l +
ty) Same as the thing (7) 4gu] Mata no 1 (Matsushinshi M
Mti J I':+・showing 1) Knee n Test Example 1 h of Example 1 (Miti J I', +1 m (product of the present invention),
PS concrete and lead plastic 11 completed) 1 completed゛41 also.
Predetermined θ) 11, (, '4 Q ' 6tl '
Transmission of %' Shingen and -44.2: A%'51 was measured.

, Examination (Examination)
The method for measuring nLV) was carried out in accordance with the exact same method. The measurement conditions for σ) are as follows: 1) Goba・l/l・−60: irradiation for 2 minutes 2) Vacuum 11
Y body-source distance: 50 (m3) IV&, collection body-#
Group Δ1 distance a 50 nn4) Irradiation 'J! F: 10
zX 1 (lrrn5) Gen i4 1': T O
NF;
l41G i)rnbe: (1,6mm1.S,yK
If J (i 0 The test results are shown in Figure 1/, -
, o Same figure σ) From the results, it is clear that the product of the present invention has the best strength among concrete.
1・K evening;+1. , times-・IV SADE) I-comparison t-,'-
It can be seen that c shows Z), a low large error rate of -4 kozu.

Test example 2 - High energy 7mm radiation source C' used in Test Example 1.

−13 instead of −60, a source with lower energy
Tc-99+, which is a one-pronged (even lower energy source)
The transmittance of the product of the present invention (radiation pure shielding of Example 1, former Boichi) was measured according to the method of Test 1011 at n°C.
is. The results are shown in the graph of Figure 2. , It item t'3. ,+J
, :r, filgime IN rq (Mr. r.

, t, rugi (・τwa〆, -, 7, 7 gentlemen qJJ village (
C Wataru Mayu Nei), 2yno1 (I understand.

4 drawings (',, 1 (m ``t'/r: B, Ming Elementary School 1.
I'iν1 of the present invention]l←ray 漉1餞、1(Ii
+l('f,!
r −+, (t”s:+Nunri 1・) and lead blank 1
1 Tsuku σ), J9 Sato 11 (Rasenshu 3t, 'S yp
r, I 1 relationship is shown - 4 repeats, Figure 2 1.1.
jiQ 橿心θ) 治′ - 滓行・false stacking (7) Thickness of the product of the present invention is 11mm permeability rate) l(') to/indicate (grab 'A') 2 ).

/Ifii/ ``Applicant -[)°P] i technique [%庚 101 shaku Makoto, - Same stock this month West II + Mining - 1st figure hara saku cm] Figure 2

Claims (1)

[Claims] A composition containing H at a ratio of 1 to 3 parts by weight of steelmaking dust, 3 to 6 parts by weight of steel slag, 2 to 3 parts by weight of sulfur, and 95 to 1 part by weight of sulfur.
:3 (Mixed and heated at 1℃, then cooled and solidified) 1゛Difference between radiation and radioactive substances that require ri￥11k, prevention +l:, 44゜