JP3025901B2 - Nitrate compression granulation method - Google Patents
Nitrate compression granulation methodInfo
- Publication number
- JP3025901B2 JP3025901B2 JP02265836A JP26583690A JP3025901B2 JP 3025901 B2 JP3025901 B2 JP 3025901B2 JP 02265836 A JP02265836 A JP 02265836A JP 26583690 A JP26583690 A JP 26583690A JP 3025901 B2 JP3025901 B2 JP 3025901B2
- Authority
- JP
- Japan
- Prior art keywords
- nitrate
- compression
- briquette
- silver nitrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000007906 compression Methods 0.000 title claims description 24
- 230000006835 compression Effects 0.000 title claims description 24
- 229910002651 NO3 Inorganic materials 0.000 title claims description 16
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 title claims description 16
- 238000005469 granulation Methods 0.000 title claims description 10
- 230000003179 granulation Effects 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 8
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical group [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 36
- 239000002994 raw material Substances 0.000 claims description 18
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 18
- 238000009826 distribution Methods 0.000 claims description 6
- 239000004484 Briquette Substances 0.000 description 19
- 239000013078 crystal Substances 0.000 description 7
- 239000010419 fine particle Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 229910001385 heavy metal Chemical class 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- -1 alkali metal salts Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical class [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
- B30B11/165—Roll constructions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Glanulating (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は硝酸塩微粒片原料を用いる乾式圧縮成形法に
関し、特に硝酸銀ブリケット及びその製造方法に関す
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dry compression molding method using a raw material of nitrate fine particles, and particularly to a silver nitrate briquette and a method for producing the same.
硝酸塩は一般に不安定であり、アルカリ金属塩は酸素
を放って亜硝酸塩に変り、また重金属塩は酸素及び窒素
を遊離して金属酸化物或いは金属を生成する。更に有機
物や酸化され易い金属と混在すると爆発性混合物を作
る。Nitrate is generally unstable, alkali metal salts release oxygen to nitrite, and heavy metal salts liberate oxygen and nitrogen to form metal oxides or metals. Further, when mixed with organic substances and easily oxidizable metals, an explosive mixture is formed.
従って硝酸塩はその製造工程中及び保管中において品
質保持及び危険防止の面から充分な注意が必要であり、
特に重金属硝酸塩の場合には更に厳重な注意が必要であ
る。Therefore, nitrates require careful attention during the manufacturing process and during storage to ensure quality and prevent danger.
In particular, in the case of heavy metal nitrate, more strict attention is required.
重金属硝酸塩の代表例として硝酸銀が挙げられるが写
真用、医薬品その他として甚だ重要である。A typical example of heavy metal nitrate is silver nitrate, which is extremely important for photographic use, pharmaceuticals and the like.
硝酸銀は一般にその水溶液中からの晶析によって得ら
れ、その純度を重視する場合には大結晶として析出させ
ることが多い。この大結晶は使い勝手のよい適当な大き
さの小片にまで砕かれ、洗浄し、遠心脱水し、遮光容器
に収納し保管される。或は析出条件を整え撹拌しながら
適当な大きさの結晶片に止めて取出される。Silver nitrate is generally obtained by crystallization from an aqueous solution thereof, and when importance is placed on its purity, it is often precipitated as large crystals. The large crystal is crushed into small pieces of suitable size that are easy to use, washed, centrifugally dehydrated, stored in a light-tight container, and stored. Alternatively, it is taken out by stopping the crystal pieces of a suitable size while adjusting the precipitation conditions and stirring.
このように適当な大きさに調えられた硝酸銀結晶片は
遮光容器に収納しておくと、保管中に固結するのが常で
あって、その防止には調温調湿管理にコストを必要と
し、また固結した結晶片塊は使用時取出しに解砕の手数
を要する。また解砕及び使用時の投入に際しては、結晶
片が砕け、弾け飛んだ微結晶片は人体に障害を与え、作
業環境を汚損し、更に少量使用の際には秤量の精度を失
う。If the silver nitrate crystal pieces thus adjusted to an appropriate size are stored in a light-shielding container, they are usually solidified during storage. In addition, it takes time to disintegrate the solidified crystal fragments at the time of use. In addition, when disintegrating and throwing in during use, the crystal fragments are broken, and the splintered microcrystal fragments damage the human body, pollute the working environment, and lose the accuracy of weighing when used in small quantities.
更に消防法において、硝酸銀結晶は規制の対象になっ
ており、製造及び取扱い施設、保管，運搬の全般に亘
り、危険物管理に関する法に則った処置が必要であっ
て、安全で且つ効率的な硝酸銀薬品形態が求められる。Furthermore, under the Fire Service Law, silver nitrate crystals are subject to regulations, requiring measures in accordance with the Law on Dangerous Goods Management throughout manufacturing and handling facilities, storage and transportation, and is safe and efficient. A silver nitrate chemical form is required.
尚硝酸銀に限らず硝酸塩についても一般的に前記の配
慮が必要である。The above consideration is generally required not only for silver nitrate but also for nitrates.
前記のような配慮から硝酸塩にはブリケット形態に圧
縮造粒することが行われる。From the above considerations, nitrate is compression-granulated into briquettes.
圧縮造粒にはブリケッティングマシーンが用いられる
が、ブリケット形状に対応する互いに整合する窪んだポ
ケットを多数設けた相対峙する圧縮ローラのクリアラン
スに原料をホッパから供給する際、原料のローラ端から
の散逸、脱落も手伝って、圧縮ローラの幅方向には原料
供給量の分布があり、ブリケット収量の歩留りが悪く、
また中央部ポケットで形成されたブリケットに比べ端部
で形成されたブリケットは強度が小さく、取扱い中に磨
砕粉末が生じる等の不都合があった。A briquetting machine is used for compression granulation, but when supplying raw materials from the hopper to the clearance of opposing compression rollers that have a number of concave pockets that match each other corresponding to the briquette shape, from the roller end of the raw material Of the raw material supply in the width direction of the compression roller, and the yield of briquette yield is poor,
Also, briquettes formed at the ends are smaller in strength than briquettes formed at the central pocket, and have disadvantages such as generation of ground powder during handling.
本発明の目的は、硝酸塩特に硝酸銀のブリケットをブ
リケッティングマシーンで造粒する際のブリケット収量
がよく、またブリケット強度にばらつきのない製造方法
を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing a briquette of nitrate, particularly silver nitrate, which has a good briquette yield when granulated by a briquetting machine and has a uniform briquette strength.
前記本発明の目的は、硝酸塩の圧縮造粒に用いるブリ
ケッティングマシーンの圧縮ロールのポケット容積が、
供給される原料の圧縮ロール幅方向量分布に相関して幅
方向に調節されていることを特徴とする硝酸塩の圧縮造
粒方法によって達成される。特に、前記圧縮ロールの巾
手方向端部に設けられたポケットは、中央部に設けられ
たポケットよりも容積が小さいことを特徴とする前記硝
酸塩の圧縮造粒方法が有用である。The object of the present invention, the pocket volume of the compression roll of the briquetting machine used for compression granulation of nitrate,
This is achieved by a method for compressing and granulating nitrate, characterized in that it is adjusted in the width direction in relation to the distribution of the amount of the supplied raw material in the width direction of the compression roll. In particular, the nitrate compression granulation method is characterized in that the pocket provided at the end in the width direction of the compression roll has a smaller volume than the pocket provided at the center.
また本発明は写真用硝酸銀に対し適用すると好ましい
効用をあげることができる。Further, the present invention can exert a preferable effect when applied to photographic silver nitrate.
次に本発明を図を用いて説明する。 Next, the present invention will be described with reference to the drawings.
第１図に本発明に使用可能なブリケッティングマシー
ンの概要図を示した。FIG. 1 shows a schematic diagram of a briquetting machine that can be used in the present invention.
１は原料（微粒片）を投入するホッパ、２は微粒片原
料中の空気を除きブリケットの歩留りを上げる脱気槽、
３は脱気原料を供給するホッパ、４は原料を圧入するテ
ーパスクリュー、５は高圧圧縮成形（以後造粒と称す）
を行う圧縮ロール対であり、51及び52は対をなす圧縮ロ
ールである。両ロール面にはブリケットに与える形状、
大きさに対応するポケット６がその圧接点で正確にポケ
ット周縁が合致するように配列されている。1 is a hopper for charging raw materials (fine particles), 2 is a deaeration tank for removing the air in the raw materials of fine particles and increasing the yield of briquettes,
3 is a hopper for supplying the degassed raw material, 4 is a taper screw for press-fitting the raw material, 5 is high pressure compression molding (hereinafter referred to as granulation).
, And 51 and 52 are paired compression rolls. The shape given to the briquette on both roll surfaces,
The pockets 6 corresponding to the size are arranged so that the edges of the pockets coincide exactly at the pressure contacts.
次に第２図に圧縮ローラ上に配列されるラウンドコー
ナピロー型のポケットの形態例を示した。Next, FIG. 2 shows a form example of a round corner pillow type pocket arranged on a compression roller.
図において、R1及びR2は相対峙する圧縮ローラ、Ｃは
その間のクリアランスである。Pi（ｉ＝1,2,…ｎ）は個
々のポケットである。aiはポケットPiのローラ円周に沿
う円弧長であり、wiはローラ軸方向の幅、diはポケット
の窪みの平均深さである。ポケットPiで造粒されるブリ
ケットの容積ViはVi＝ｋ（aiwidi）で与えられる。In the figure, the compression roller R 1 and R 2 which faces phases, C is an therebetween clearance. Pi (i = 1, 2,... N) are individual pockets. ai is the arc length along the roller circumference of the pocket Pi, wi is the width in the roller axis direction, and di is the average depth of the pocket depression. The volume Vi of the briquette granulated in the pocket Pi is given by Vi = k (aiwidi).
またEaはローラ円周方向、Ewはローラ軸方向にポケッ
トを隔てる目地縁の幅である。Ea is the circumferential direction of the roller, and Ew is the width of the joint edge separating the pocket in the axial direction of the roller.
本発明においては、前記ポケットの形態において、目
地縁の幅Ea及びEwを0.5mm以下に抑え、ブリケットの収
率（歩留）を上げる手段の１つに用いる。In the present invention, in the form of the pocket, the width Ea and Ew of the joint edge are suppressed to 0.5 mm or less and used as one of means for increasing the briquette yield (yield).
但し目地縁の幅が狭すぎると強度が不足するので0.2m
m以上であることが好ましい。However, if the width of the joint edge is too narrow, the strength will be insufficient.
It is preferably at least m.
また本発明においては、原料硝酸塩のローラ軸方向の
供給量分布にポケットで造粒されるブリケット容積Viを
相関させ、ブリケットに加わる圧縮度を揃えブリケット
硬度を同等とし、ブリケットの耐磨砕性を上げている。
その１つの手段としてPiのai,wiを等しくし中央部ポケ
ットのdiを深く端部ポケットのdiを浅くすることが挙げ
られる。Further, in the present invention, the briquette volume Vi granulated in the pocket is correlated with the supply amount distribution of the raw material nitrate in the roller axial direction, the degree of compression applied to the briquettes is made uniform, the briquette hardness is made equal, and the attrition resistance of the briquette is improved. Raising.
One means is to make ai, wi of Pi equal and make di of the central pocket deep and shallow of the end pocket di.
原料の軸方向供給量分布は中央部100とすると端部は
統計的に92を与える。ポケットの容量は中央部100に対
し端部は90以下が好ましい。Assuming that the distribution of the raw material in the axial direction is 100 at the center, 92 is statistically given at the end. The capacity of the pocket is preferably 90 or less at the end with respect to the center 100.
尚ポケットの４隅は、ブリケットのポケット型離れを
容易にし、かつ耐磨砕性、収量を大きくするためにラウ
ンドコーナとすることが好ましい。It is preferable that the four corners of the pocket have round corners in order to facilitate separation of the briquette from the pocket mold and to increase the crush resistance and the yield.
従来の圧縮ローラのポケットについては、一般に目地
縁幅が広く、また軸方向に係る原料供給量分布に相関さ
せてポケット容量の調整は行われていない。Regarding the pocket of the conventional compression roller, the joint edge width is generally wide, and the pocket capacity is not adjusted in correlation with the raw material supply amount distribution in the axial direction.
圧縮ローラの圧縮圧力は油圧方式等によって与えら
れ、ブリケットの使用目的に適したブリケット強度とな
るように調節される。また造粒に必要ならば適温に調整
してもよい。The compression pressure of the compression roller is given by a hydraulic system or the like, and is adjusted so as to have briquette strength suitable for the purpose of use of the briquette. If necessary for granulation, the temperature may be adjusted to an appropriate temperature.
またポケットを穿つ表面層は原料の物化性及び圧に耐
えうる剛性をもつ材質（例えばSus310S）が選ばれ、差
換可能であることが好ましい。Further, a material (for example, Sus310S) having a rigidity capable of withstanding the physical properties and pressure of the raw material is selected for the surface layer for forming the pocket, and is preferably replaceable.
写真用硝酸銀の造粒条件として、微粒片原料の含水率
は０〜１％が好ましく、更に0.1〜0.8％が好ましい。0.
1％未満は遠心脱水で到着するには困難があり、また取
扱時微粉が発生し易い。また１％を越えるとブリケット
表面に搾り出された水分が付着し、流動性不良、ブリケ
ット間の固結、容器壁への付着など好ましくない事態を
招く。As for the granulation conditions of silver nitrate for photography, the water content of the raw material of fine particles is preferably 0 to 1%, more preferably 0.1 to 0.8%. 0.
If it is less than 1%, it is difficult to arrive by centrifugal dehydration, and fine powder is easily generated during handling. On the other hand, if it exceeds 1%, the squeezed water adheres to the surface of the briquette, causing unfavorable situations such as poor fluidity, solidification between briquettes, and adhesion to the container wall.
また原料微粉片の大きさは、0.1〜3mmの範囲が好まし
く、またこの範囲で分布がブロードである方が最密充填
に都合がよく造粒性がよい。The size of the raw material powder is preferably in the range of 0.1 to 3 mm, and a broad distribution in this range is more convenient for close-packing and good in granulation.
またブリケットの薬品形態は、使用態様に合った最小
有効数値単位の重量、実用上充分な強度、見掛比重が大
きく小体積であること、更に溶解速度が大きいこと等が
勘案されて定められる。In addition, the chemical form of the briquette is determined in consideration of the weight of the minimum effective numerical unit suitable for the mode of use, sufficient strength for practical use, large apparent specific gravity, small volume, and high dissolution rate.
尚、磨砕等によって発生する粉末は、固結、容器壁等
への付着を起こすので全くないことが好ましいが10wt％
程度までの混在は実用上左程問題にならない。It is preferable that the powder generated by grinding or the like is completely free from solidification and adhesion to the container wall, etc.
Mixing to the extent does not pose a problem in practice.
以上のように諸種事項を勘案し、実用に最も適した硝
酸銀プリケット薬品形態が選ばれる。As described above, the most suitable silver nitrate precket chemical form is selected in consideration of various matters.
また本発明に係る硝酸銀原料微粉片は、日本カーリッ
ト（株）；危険性評価試験所の評価結果では、落球式打
撃感度試験結果では「不爆」となるが、落球重量試験で
「爆」となり「危険性中」に分類され、また、燃焼試験
によると、「危険性大」に分類され、従って、「第１種
酸化固体」と評価される。The fine particles of the silver nitrate raw material according to the present invention were evaluated as "non-explosion" in the ball drop impact sensitivity test results by Japan Carlit Co., Ltd .; It is classified as "dangerous", and according to the combustion test, is classified as "highly dangerous", and is therefore evaluated as "a first-class oxidized solid".
一方、硝酸銀ブリケットについては、50/60鉄管起爆
試験で「不爆」となり「危険性無」と評価される。ま
た、500g燃焼試験では「燃焼中断」と判断され、硝酸銀
ブリケットは「危険性無」となり、「非危険物」と評価
される。On the other hand, silver nitrate briquettes were evaluated as "non-explosive" in the 50/60 iron tube initiation test and evaluated as "having no danger". Also, in the 500g combustion test, it was determined that "burning was interrupted", and the silver nitrate briquette was evaluated as "having no danger" and was evaluated as "non-hazardous".
尚、前記試験方法については、法規に則り定められた
前記危険性評価試験所の定める「不安定性物質の危険性
評価試験方法」に紹介されている。The above-mentioned test method is introduced in the “Hazard Evaluation Test Method for Unstable Substances” defined by the above-mentioned risk evaluation laboratory, which is defined in accordance with laws and regulations.
次に実施例によって本発明の効果を示す。 Next, the effects of the present invention will be described with reference to examples.
表−１に示す諸元を与えたラウンドコーナピロー型ポ
ケットを中央部に３列、両端に夫々１列計５列設けた圧
縮ローラR I,R II及びR IIIを用い硝酸銀ブリケットを
調整した結果を表−２に掲げた。The results of adjusting silver nitrate briquettes using the compression rollers RI, R II and R III provided with three rows of round corner pillow-type pockets provided with the specifications shown in Table 1 at the center and five rows each at both ends are provided. It is listed in Table-2.
尚、中央部３列のポケットの容量Vcと端部ポケットの
容量Vsとの比Vs/Vc＝Vrはポケットの深さで調節した。The ratio Vs / Vc = Vr of the capacity Vc of the pockets in the center three rows and the capacity Vs of the end pockets was adjusted by the depth of the pockets.
表−２から明かなように本発明の要件を備えた圧縮ロ
ールR IIIは歩留は良好であり、またポケット位置によ
る硬度のばらつきが少く、端部ポケットのブリケットも
実用的硬度を有している。 As is clear from Table 2, the compression roll R III having the requirements of the present invention has a good yield, has a small variation in hardness depending on the pocket position, and the briquettes in the end pockets have practical hardness. I have.
以上述べたように本発明に沿って調整された硝酸銀ブ
リケットは、収量が大きく、かつ破砕が少く、粉末を生
ずることが少く、容器その他の器壁への固着、固結塊の
生成がなく、ロスが減少しかつ取扱い工数が減る。As described above, silver nitrate briquettes prepared in accordance with the present invention have high yields, low crushing, low powder generation, no sticking to containers and other vessel walls, and no formation of agglomerates. Loss is reduced and handling man-hours are reduced.
また硝酸銀微粉塵による人体の傷害、作業環境の汚損
がなくなる等の数々のメリットを有している。In addition, there are many advantages such as the elimination of injuries to the human body and contamination of the working environment due to silver nitrate fine dust.
第１図は本発明に使用されるブリケッティングマシーン
の概要図である。第２図はピロー型ポケットの説明図で
ある。 ２……脱気槽、４……テーパスクリュー、 ５……圧縮ロール対、 51及び52……圧縮ロール、６……ポケット Ｍ……原料、Ｂ……ブリケット、Pi……ポケット、 Eai,Ewi……目地縁、ai,wi……ポケット幅FIG. 1 is a schematic diagram of a briquetting machine used in the present invention. FIG. 2 is an explanatory view of a pillow type pocket. 2 ... deaeration tank, 4 ... taper screw, 5 ... compression roll pair, 51 and 52 ... compression roll, 6 ... pocket M ... raw material, B ... briquette, Pi ... pocket, Eai, Ewi …… joint edge, ai, wi …… pocket width
───────────────────────────────────────────────────── フロントページの続き (72)発明者 前澤 博司 東京都日野市さくら町１番地 コニカ株 式会社内 審査官 服部 智 (56)参考文献 特開 平４−141224（ＪＰ，Ａ) 特開 平２−267107（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01J 2/00 - 2/30 C01B 21/48 C01G 1/08 C01G 5/00 - 5/02 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hiroshi Maezawa 1 Sakuracho, Hino-shi, Tokyo Examiner in Konica Corporation Satoshi Hattori (56) References JP-A-4-141224 (JP, A) JP-A-Hei 2-267107 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B01J 2/00-2/30 C01B 21/48 C01G 1/08 C01G 5/00-5/02
Claims (3)
グマシーンの圧縮ロールのポケット容積が、供給される
原料の圧縮ロール幅方向量分布に相関して幅方向に調節
されていることを特徴とする硝酸塩の圧縮造粒方法。1. The pocket volume of a compression roll of a briquetting machine used for compression granulation of nitrate is adjusted in a width direction in relation to a distribution amount of a raw material to be supplied in a width direction of the compression roll. Granulation method of nitrate.
たポケットは、中央部に設けられたポケットよりも容積
が小さいことを特徴とする請求項１に記載の硝酸塩の圧
縮造粒方法。2. The method for compressing and granulating nitrate according to claim 1, wherein the pocket provided at the end in the width direction of the compression roll has a smaller volume than the pocket provided at the center. .
に記載の硝酸塩の圧縮造粒方法。3. The method according to claim 1, wherein said nitrate is silver nitrate.
3. A method for compressing and granulating a nitrate according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02265836A JP3025901B2 (en) | 1990-10-03 | 1990-10-03 | Nitrate compression granulation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02265836A JP3025901B2 (en) | 1990-10-03 | 1990-10-03 | Nitrate compression granulation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04141225A JPH04141225A (en) | 1992-05-14 |
| JP3025901B2 true JP3025901B2 (en) | 2000-03-27 |
Family
ID=17422737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02265836A Expired - Fee Related JP3025901B2 (en) | 1990-10-03 | 1990-10-03 | Nitrate compression granulation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3025901B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007255392B2 (en) * | 2006-06-07 | 2011-09-22 | Novartis Ag | Process for making multiparticulates using a roller compactor |
-
1990
- 1990-10-03 JP JP02265836A patent/JP3025901B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04141225A (en) | 1992-05-14 |
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