593151 A7 _____ 五、發明說明（） 本發明係有關以水消化生石灰後調製消石灰生料，使 消石灰生料與碳酸氣體相互反應製造碳酸鈣之方法者，特 別是有關藉由調節反應條件後，可控制碳酸鈣粒徑之碳酸 鈣之製造方法。 先行技術中，做爲合成碳酸鈣之製造方法者係於消石 灰生料中吹入碳酸氣體使進行反應之代表 ''液-氣〃法者 ，藉由消石灰生料之濃度、反應溫度、反應方法、添加劑 之有無與控制其種類等之反應條件後，取得各種粒徑、形 狀之碳酸鈣者爲公知者。 惟，藉由現行工業上廣泛被採用之 ''液-氣〃法欲使 碳酸鈣之平均長徑於0 . 5〜2 // m間變化之簡便製造方 法者無法取得。平均長徑約爲0 . 5〜2 // m之合成碳酸 鈣適於做爲製紙用之塗工顏料、內添材料等各種性能之提 昇，其低成本之製造方法被期待著。爲解決此問題於成長 媒體之消石灰生料或部份被氧化之消石灰生料中添加核之 晶種之方法，如：特公平7 - 5 3 0 5號及特公平 3 - 1 9 6 1 5號之各公報所載者，惟，晶種之調製爲個 別工程，同時伴隨控制氣體流量，因此，整體工程出現極 爲煩雜之問題。 另有p Η値爲小於0 . 2之條件下，使進行部份碳酸 化之板狀鹽基性碳酸鈣產生，再使完成反應爲止進行碳酸 化之方法者如特公平3 - 3 6 0 5號公報所載者。惟’控 制低流量之碳酸氣，務必藉由Ρ Η切換氣體流量，其製造 時間長且工程煩雜。 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-4 - (請先閱讀背面之注意事項 »!裝 ϋ H ί I ϋ ϋ 一-«»4· I 1 tm ϋ / ϋ I I 本頁) 經濟部智慧財產局員工消費合作社印製 593151 經濟部智慧財產局員工消費合作社印製 A7 _B7 ____ 五、發明說明？） 更使部份碳酸化之消石灰生料進行濕式磨碎後’添加 二次消石灰生料之後完成碳酸化之方法如：特開平 5 - 2 2 1 6 3 4號公報所載者，惟，進行部份碳酸化後 ，以砂輪機進行濕式磨碎之工程極爲煩雜不理想。 另外，y液-液〃法係使以含碳酸離子爲主之溶液（ 碳酸鈉水溶液、碳酸銨水溶液等）與鈣化合物之溶液（氯 化鈣水溶液、醋酸鈣水溶液等）相互反應後取得之碳酸鈣 粒子者，添加反應緩衝劑之碳酸鹽溶液與鈣鹽溶液任一方 滴入另一方混合之後，於碳酸化反應者更與鈣反應後滴入 形成水不溶性鹽或難溶性鹽之水溶性鹽或水溶性酸後，取 得粒徑0 . 1〜2 0 // m之碳酸鈣之方法者如：特開平 7 - 1 9 6 3 1 6號公報所公開者，各原料筒必要時非控 制滴下量不可，整體裝置極爲煩雜。 因此，本發明之目的係以提供一種簡便，且成本低之 可控制所期待大小之粒徑之碳酸鈣者。 爲達成該目的，本發明藉由以水消化生石灰連續或2 段分次濕式消化後，調製消石灰生料之消化工程與以消化 工程所調製之水性消石灰生料中吹入二氧化碳，分次式或 連續式進行碳酸鈣之工程含有之碳酸鈣之方法中，於消化 工程第1階段中使水/生石灰重量比（水比）爲1 · 5〜 1 0之製造碳酸鈣之方法被形成之。 本發明者以此消化工程第1階段中使水比於1 · 5〜 1 0之範圍內變化後，對應水比後發現碳酸鈣粒子徑之變 化爲基準。亦即，水比1 · 5〜1 0之範圍內，硏判以後 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱1 ~ - — — — — — ·1111111 > — — — — — — — — (請先閱讀背面£.項^5寫本Ϊ 593151 經濟部智慧財產局員工消費合作社印製 A7 B7_ 五、發明說明€ ) 述之方法下可取得所測定之1次粒子平均長徑0 . 5 β m 〜2 //m之範圍者，且，粒子均接近均勻者。 本發明中，第1階段之消化工程中，水比爲目標之碳 酸鈣粒徑於1 . 5〜1 0之範圍下進行變化之。水比 1 · 5〜1 0之範圍內時，水比愈大取得碳酸鈣之粒徑則 愈大者。當水比小於1 . 5時，消化時將出現蒸氣消化， 消石灰粒徑明顯變大，後工程所合成之碳酸鈣亦呈凝聚體 。反之，水比大於1 0則碳酸鈣粒子之分散性不良，品質 不佳而不理想。 爲取得高均一性之碳酸鈣粒子，於消化工程第1階段 中由最初之消化反應至產生消化反應之全程領域選擇特定 水比於1 · 5〜1 0之範圍下進行消化，使分別特定量之 生石灰與水接觸之。亦即，由反應開始同時或隨後於實質 之特定水比下進行反應。具體而言，例如：針對所定之水 量，以投入開始1分鐘以內做爲基準投入所定量之生石灰 。生石灰之投入時間針對所定水量若超出1分鐘則初期消 化溫度之上昇遲緩，消化反應亦緩慢，因此容易凝聚消石 灰粒子。此對於由消石灰所生成之碳酸鈣粒子亦極易凝聚 之問題產生，做爲碳酸鈣之用途之品質上不理想者。又， 工業上生產時，藉由批量、消化方式、溫度等條件及做爲 製品者必要之粒子均一性之高度，所容許之凝聚程度等， 務必調整投入生石灰之速度，決定適當速度者。 2段濕式消化係可變化水比之工程者，使水與生石灰 反應之第1階段與調製所定濃度之消石灰生料後，完成成 本紙張尺度適用中國國家標準(CNS)A4規格（210 X 297公釐） -I» n β— ϋ ϋ ϋ ϋ I I · 1 ϋ ·1 ϋ «I ϋ ϋ^口，0 ί ϋ ϋ n n 1 n I (請先閱讀背面之注意事項寫本頁) 593151 A7 ____B7 _ 五、發明說明6 ) 熟之第2階段所組成之消化工程者，連續2段濕式消化及 分批2段濕式消化均可適用於本發明者。 做爲2段濕式消化之第1階段消化方法者可適用消化 槽分批方法，或攪煉連續混合方式、螺旋連續混合方式、 捏合連續混合方式等，惟限定於特定水比下進行消化之狀 態下取得者，消化方法並無特限定。又，實質上同時投入 所定量之生石灰者可利用例如：由附有計量器之料斗一倂 投入之方式者。 做爲第2階段之消化方法者係以調製所定濃度後使成 熟完成爲目的者，因此，並無特別方法之限定。 碳酸化工程中碳酸化反應前其消石灰生料被調製濃度 爲3〜1 5重重％、溫度3 0〜9 0 C者。於此消石灰生 料中藉由吹入含有碳酸氣體之混合氣體或碳酸氣體後，使 其碳酸化率爲1 0 0 %進行反應之。當消石灰生料濃度小 於3重量％時，則工業生產性不良，反之，大於1 5重量 %時，則生料粘度太高，操作性惡化之，與先行技術之碳 酸鈣製造方法同樣不理想者。又，反應開始前消石灰生料 之溫度若小於3 0 °C則膠質方解石產生後易成凝聚體，反 之，大於9 0 °C則能量成本太高不利經濟面。另外，碳酸 化工程可爲分批式亦可爲連續式者。 本發明該碳酸鈣之製造方法可取得1次粒子平均長徑 被控制制於0 . 5〜2 // m之碳酸鈣者。本發明該碳酸鈣 之製造方法可直接使用既存設備之機器而無需改造或附加 新機器即可實施，因此，無需高額設備投資，且可簡便， 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） (請先閱讀背面之注意事項β寫本頁)593151 A7 _____ V. Description of the invention () The present invention relates to a method for preparing calcium carbonate by digesting quicklime with water, and reacting the raw limestone with carbonic acid gas to produce calcium carbonate, especially after adjusting the reaction conditions, Method for producing calcium carbonate for controlling particle size of calcium carbonate. In the prior art, as the manufacturing method for the synthesis of calcium carbonate, the representative “liquid-air aeration method” is to blow carbon dioxide gas into the hydrated lime raw material to perform the reaction. The concentration, reaction temperature, and reaction method of the hydrated lime raw material After the reaction conditions such as the presence or absence of additives and the control of the type, etc., calcium carbonates of various particle sizes and shapes are known. However, with the '' liquid-gassing method '' widely used in the current industry, a simple manufacturing method that can change the average major diameter of calcium carbonate between 0.5 and 2 // m cannot be obtained. Synthetic calcium carbonate with an average major diameter of about 0.5 to 2 // m is suitable for improving various properties such as coating pigments and internal additives for papermaking, and its low-cost manufacturing method is expected. In order to solve this problem, the method of adding seed crystals to the slaked raw meal or partially oxidized slaked raw meal in the growth media, such as: Special Fair 7-5 3 0 5 and Special Fair 3-1 9 6 1 5 As stated in the various bulletins, the modulation of the seed crystal is an individual project, and it is accompanied by the control of the gas flow rate. Therefore, the overall project has a very complicated problem. In addition, if p Η 値 is less than 0.2, the method of partially carbonated calcium carbonate is produced, and then the method of carbonization until the completion of the reaction is particularly fair 3-3 6 0 5 It is contained in the bulletin. However, to control carbon dioxide gas with a low flow rate, it is necessary to switch the gas flow rate with PΗ, which has a long manufacturing time and complicated engineering. This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) -4-(Please read the precautions on the back first !! Decoration H ί I ϋ ϋ ϋ-«» 4 · I 1 tm ϋ / ϋ II on this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 593151 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 _B7 ____ 5. Description of the invention? ) The method of carbonizing the partially carbonated slaked lime raw material after wet grinding 'adding secondary slaked lime raw material to complete the carbonation method is as described in Japanese Patent Application Laid-Open No. 5-2 2 1 6 3 4 but, After partial carbonation, the wet grinding process with a grinder is extremely complicated and unsatisfactory. In addition, the y liquid-liquid method is a carbonic acid obtained by reacting a solution mainly containing carbonate ions (sodium carbonate aqueous solution, ammonium carbonate aqueous solution, etc.) and a calcium compound solution (calcium chloride aqueous solution, calcium acetate aqueous solution, etc.) with each other. For calcium particles, after adding either the carbonate solution or the calcium salt solution of the reaction buffer to the other dropwise, after the carbonation reacter reacts with calcium, it will be added dropwise to form a water-insoluble salt or a water-soluble salt that is insoluble or hardly soluble. After the water-soluble acid, a method for obtaining calcium carbonate having a particle diameter of 0.1 to 2 0 // m is disclosed in Japanese Patent Application Laid-Open No. 7-1 9 6 3 1 6, and the amount of dripping of each raw material barrel is controlled as necessary. No, the overall installation is extremely complicated. Therefore, an object of the present invention is to provide a calcium carbonate which is simple and low in cost and can control a particle size of a desired size. In order to achieve this object, the present invention uses a continuous or two-stage wet digestion of digested quicklime with water, and then prepares a digestion process of slaked lime raw material and blows carbon dioxide into the aqueous slaked lime raw material prepared by the digestion process. In the method of continuously performing calcium carbonate contained in the process of calcium carbonate, a method for producing calcium carbonate is formed in which the weight ratio of water / quick lime (water ratio) is 1.5 to 10 in the first stage of the digestion process. The inventors have changed the water ratio in the range of 1.5 to 10 in the first stage of this digestion process, and found that the change in the diameter of the calcium carbonate particles corresponding to the water ratio was used as a reference. That is, within the range of water ratio 1 · 5 ~ 10, after the judgment of this paper, the Chinese national standard (CNS) A4 specification (210 X 297 public love 1 ~-— — — — — 1111111 > — — — — — — — — (Please read the back £. Item ^ 5 script Ϊ 593151 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7_ 5. Description of the invention €) The average particle size measured once can be obtained The length of 0.5 β m ~ 2 // m range, and the particles are close to uniform. In the present invention, in the first stage of the digestion project, the calcium carbonate particle diameter of the target water ratio is 1.5 ~ It is changed within the range of 10. When the water ratio is within the range of 1.5 to 10, the larger the water ratio is, the larger the particle size of the calcium carbonate is. When the water ratio is less than 1.5, it will appear during digestion. After steam digestion, the particle size of slaked lime becomes significantly larger, and the calcium carbonate synthesized after the project also shows aggregates. Conversely, if the water ratio is greater than 10, the calcium carbonate particles have poor dispersibility and poor quality. This is not ideal. Calcium carbonate particles in the first stage of the digestive process from the initial digestive reaction to production During the whole process of digestion reaction, a specific water ratio is selected to be digested in the range of 1.5 to 10, so that a specific amount of quicklime is in contact with water. That is, the reaction is started at the same time or subsequently at the actual specific water ratio. Specifically, for example, for a given amount of water, a certain amount of quicklime is input based on within 1 minute of the start of the input. If the amount of quicklime is input for a given amount of water over 1 minute, the initial digestion temperature rises slowly, and the digestion reaction also Slow, so it is easy to agglomerate slaked lime particles. This also causes the problem that calcium carbonate particles generated from slaked lime are easy to agglomerate, and it is not ideal for the use of calcium carbonate. Also, in industrial production, The digestion method, temperature and other conditions, as well as the height of particle uniformity necessary for the product, the degree of permissible agglomeration, etc., must be adjusted to the speed of lime, to determine the appropriate speed. 2 stage wet digestion system can change the water ratio project The cost of completing the first stage of the reaction between water and quicklime and preparing the hydrated lime raw material of a predetermined concentration is completed. Paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) -I »n β— ϋ ϋ ϋ ϋ II · 1 ϋ · 1 ϋ« I ϋ ϋ ^ 口 ， 0 ί ϋ ϋ nn 1 n I (Please read the precautions on the back first to write this page) 593151 A7 ____B7 _ V. Description of the invention 6) The digestion engineer composed of the second stage of cooking can be performed in two consecutive stages of wet digestion and batch of two stages of wet digestion. Suitable for the inventors. As the first stage digestion method of two-stage wet digestion, the digestion tank batch method can be applied, or the continuous mixing method of spiral mixing, spiral continuous mixing method, kneading continuous mixing method, etc. are limited to digestion under a specific water ratio. There is no particular restriction on the method of digestion for those who have obtained it. In addition, the person who inputs the quantitative amount of quicklime at the same time can use, for example, a method of putting in a batch from a hopper with a meter. The digestion method in the second stage is for the purpose of adjusting the predetermined concentration to complete the maturation. Therefore, there is no particular limitation on the method. Before the carbonation reaction in the carbonation process, the slaked lime raw material is adjusted to a concentration of 3 to 15% by weight and a temperature of 30 to 90 ° C. In this slaked lime raw material, a mixed gas containing carbonic acid gas or carbonic acid gas is blown, and then a carbonation rate of 100% is reacted. When the slaked lime raw material concentration is less than 3% by weight, the industrial productivity is poor. On the other hand, when the slaked raw material concentration is more than 15% by weight, the raw material viscosity is too high and the operability is deteriorated. It is also not ideal as the calcium carbonate manufacturing method of the prior art. . In addition, if the temperature of the slaked lime raw material before the reaction starts is less than 30 ° C, colloidal calcite is likely to form aggregates. On the other hand, if it is higher than 90 ° C, the energy cost is too high and it is uneconomical. In addition, the carbonation process may be a batch process or a continuous process. According to the method for manufacturing calcium carbonate of the present invention, it is possible to obtain a calcium carbonate whose primary average particle diameter is controlled to 0.5 ~ 2 // m. The manufacturing method of the calcium carbonate of the present invention can be implemented directly by using the existing equipment of the machine without modification or additional new machines. Therefore, it does not require high equipment investment and is simple. The paper size applies the Chinese National Standard (CNS) A4 specification ( 210 X 297 mm) (Please read the precautions on the back first to write this page)
裝 i — I « — — — — — I — 經濟部智慧財產局員工消費合作社印製 593151 A7 ---------B7__ 五、發明說明f ) 低成本下完成者。 藉由本發明該碳酸鈣之製造方法後製造碳酸鈣者，可 取得良好均勻性之粒子，特別是做爲製紙用時之塗工顏料 、內添材料時，可提昇其白色度、光澤度、平滑性等之各 種性能者。 〔實施例〕 以下針對本發明實施例進行說明。本發明並非僅限於 下記實施者，本發明之主旨範圍內者可謂可實施適當變形 者。 (實施例1 ) 以本社製生石灰（J I S工業用石灰 生石灰特號、 粒度3〜3 5 m m )做爲生石灰原料，做爲第1階段之消 化工程者針對7 0 °C之水使水/生石灰之比爲1 · 5投入 後進行水和反應1 5分鐘後，於第2階段之消化工程中進 行濃度調整，溫度調整，及完成成熟後，取得溫度6 0 t ，5重量％之消石灰生料。針對此消石灰生料使含有二氧 化碳之氣體（C〇2濃度：2容量％)以34L/min ，kg — C a (〇H) 2之流速下導入至碳酸化率10 0% 爲止後，完成反應後取得碳酸鈣。 針對所取得之碳酸鈣進行電子顯微鏡觀察後之結果證 明1次粒子平均長徑爲0 · 5 // m之均一粒子者。 又，所謂1次粒子平均長徑係指隨意攝影後倍率爲 本紙張尺度適用中國國家標準（CNS)A4規格（210 χ 297公釐） (請先閲讀背面之注意事 寫本頁)I — I «— — — — — I — Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 593151 A7 --------- B7__ 5. Description of the invention f) Completed at low cost. Those who produce calcium carbonate by the method for producing calcium carbonate according to the present invention can obtain particles with good uniformity, especially when used as coating pigments and internal materials in papermaking, which can improve its whiteness, gloss, and smoothness. Sexual performance. [Examples] Examples of the present invention will be described below. The present invention is not limited to the following implementers, and those within the scope of the gist of the present invention may be appropriately modified. (Example 1) Quicklime (JIS industrial lime quicklime special number, particle size 3 ~ 35 mm) made by our company was used as the raw material of quicklime, and the digestion engineer in the first stage made water / quick lime for 70 ° C water After the ratio is 1.5, water and reaction are performed for 15 minutes. After the concentration adjustment, temperature adjustment, and maturation in the second stage of the digestion project, the temperature is 60 t, and 5 wt% of the slaked lime raw material is obtained. . For this slaked lime raw material, a carbon dioxide-containing gas (C02 concentration: 2% by volume) was introduced at a flow rate of 34 L / min at a flow rate of kg-C a (〇H) 2 to a carbonation rate of 100%, and the reaction was completed. After obtaining calcium carbonate. Observation of the obtained calcium carbonate by an electron microscope confirmed that the primary particles had a uniform average particle diameter of 0 · 5 // m. In addition, the so-called average primary particle diameter refers to the magnification ratio after random photography. The paper size applies the Chinese National Standard (CNS) A4 (210 x 297 mm) (please read the precautions on the back to write this page)
· 1 §mam 1 1 ϋ 1 1^^t 1 ·ϋ 1 ϋ ϋ ϋ ϋ I 經濟部智慧財產局員工消費合作社印製 593151 A7 B7 五、發明說明f ) 3 0，0 〇 〇倍之電子顯微鏡像片中以電子游標針對2條 對角線之粒子進行測定粒子最長之弦，以此做爲該粒子之 長徑，求取其平均値做成1次粒子平均長徑者。 (實施例2 ) 除以水/生石灰之比爲3做爲第1階段之消化工程之 外，與實施例1同法，取得碳酸鈣。藉由電子顯微鏡觀察 後證明所取得碳酸鈣其1次粒子平均長徑爲1 // m之均一 粒子者。 (實施例3 ) 除使水/生石灰之比爲5做爲第1階段之消化工程之 外，與實施例1同法取得碳酸鈣。藉由電子顯微鏡觀察後 ，證明所取得之碳酸鈣其1次粒子平均長徑爲1 · 3 // m 之均一粒子者。 (實施例4 ) 除使水/生石灰之比爲7做爲第1階段之消化工程之 外，與實施例1同法取得碳酸鈣。藉由電子顯微鏡觀察後 ，證明所取得之碳酸鈣其1次粒子之平均長徑爲1 · 7 // m之均一粒子者。 (實施例5 ) 除使水/生石灰之比爲1 〇做爲第1階段之消化工程 ^紙張尺度適用中國國家標準（CNS)A4規格(210 X 297公髮1 ~^ • — — — II —ί — — — — — — (請先閱讀背面之注意事項寫本頁) — — — — — — — — 經濟部智慧財產局員工消費合作社印製 593151 κι __Β7 五、發明說明f ) 之外，與實施例1同法取得碳酸鈣。藉由電子顯微鏡觀察 後，證明所取得之碳酸鈣其1次粒子之平均長徑爲2 // m 之均一粒子者。 (比較例1 ) 除使水/生石灰之比爲1做爲第1階段之消化工程之 外，與實施例1同法取得碳酸鈣。藉由電子顯微鏡觀察後 ，證明所取得之碳酸鈣其1次粒子之平均長徑爲0 · 5 // m之不均凝聚粒子者。 (比較例2 ) 使消化工程做成水比2 6，做爲一般使用之連續1段 消化之外，與實施例1同法取得碳酸鈣。藉由電子顯微鏡 觀察後，證明所取得之碳酸鈣爲1次粒子之平均長徑 2 . 5// m之不均一凝聚粒子者。 表1係代表該各實施例及各比較例中水比一碳酸鈣之 粒徑關係者。 (請先閱讀背面之注意事項寫本頁) 裝 ϋ ϋ 1 n^OJ· _1 ·ϋ I ϋ «ϋ ϋ 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）· 1 〇 - 593151 A7 B7 五、發明說明？ 表1 水/生石灰重量比 [·] [β m ] 1次粒子平均 長徑 [β m ] 比較例1 1 6.4 0.5 實施例1 1.5 2.5 0.5 實施例2 3 2.9 1.0 實施例3 5 3.1 . 1.3 實施例4 7 3.4 1.7 實施例5 10 4.1 2.0 比較例2 2 6- 7.6 2.5 下 鏡 微 顯 ο 子 ο 電 5 之 - 鈣 A 酸 L 碳 之 A 2 B 例 I 施 R 實 ο 表 H J 代 : 明 1 器 說圖 機 單 >^\ 定 簡 1 。 測 之圖者 * 面 ί 片 圖 像 [ 之 (請先閱讀背面之注意事· 1 §mam 1 1 ϋ 1 1 ^^ t 1 · ϋ 1 ϋ ϋ ϋ ϋ I Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy 593151 A7 B7 V. Description of the invention f) 3 0, 0 〇 × electron microscope In the photo, an electronic cursor is used to measure the longest chord of the particles for two diagonal particles, and this is used as the long diameter of the particle. The average length of the particle is calculated to make the average long diameter of the primary particle. (Example 2) Calcium carbonate was obtained in the same manner as in Example 1 except that the ratio of water to quicklime was 3 as the digestion process in the first stage. Observation with an electron microscope proved that the obtained calcium carbonate had a uniform primary particle with an average major diameter of 1 // m. (Example 3) Calcium carbonate was obtained in the same manner as in Example 1 except that the ratio of water to quicklime was 5 as the digestion process in the first stage. Observation with an electron microscope proved that the obtained calcium carbonate had a uniform primary particle with an average major diameter of 1 · 3 // m. (Example 4) Calcium carbonate was obtained in the same manner as in Example 1 except that the water / quick lime ratio was set to 7 as the first stage of the digestion process. After observation with an electron microscope, it was proved that the average major axis of the primary particles of the obtained calcium carbonate was a uniform particle of 1 · 7 // m. (Example 5) Except the water / quick lime ratio of 10 was used as the first stage of the digestion project. ^ The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 issued 1 ~ ^. — — — — — — ί — — — — — — (Please read the notes on the back to write this page first) — — — — — — — — — Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5315151 κι __Β7 5. Except for the invention f), and Example 1 obtained calcium carbonate in the same manner. Observation with an electron microscope proved that the obtained calcium carbonate had an average major diameter of primary particles of 2 // m uniform particles. (Comparative Example 1) Calcium carbonate was obtained in the same manner as in Example 1 except that the ratio of water to quicklime was set to 1 as a digestion process in the first stage. Observation with an electron microscope proved that the obtained calcium carbonate had uneven primary particles with an average major diameter of primary particles of 0 · 5 // m. (Comparative Example 2) Calcium carbonate was obtained in the same manner as in Example 1 except that the digestion process was made into a water ratio of 26 and used as a continuous one-stage digestion for general use. Observation with an electron microscope proved that the obtained calcium carbonate was an unevenly agglomerated particle with an average major diameter of 2.5 // m of primary particles. Table 1 represents the relationship between the particle size of water to calcium carbonate in the respective examples and comparative examples. (Please read the notes on the back first to write this page) Decoration ϋ 1 n ^ OJ · _1 · ϋ I ϋ «ϋ ϋ Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs This paper is printed in accordance with China National Standard (CNS) A4 (210 X 297 mm) · 10-593151 A7 B7 5. Explanation of the invention? Table 1 Water / Lime Lime Weight Ratio [·] [β m] Primary particle average major diameter [β m] Comparative Example 1 1 6.4 0.5 Example 1 1.5 2.5 0.5 Example 2 3 2.9 1.0 Example 3 5 3.1. 1.3 Implementation Example 4 7 3.4 1.7 Example 5 10 4.1 2.0 Comparative Example 2 2 6- 7.6 2.5 Microscopically shown in the lower lens ο ο electricity 5 of-calcium A acid L carbon of A 2 B Example I application of R implementation ο Table HJ generation: Ming 1 Device description machine list> ^ \ 定 简 1. The person who measured the picture * face ί picture image [of (please read the notes on the back first
經濟部智慧財產局員工消費合作社印製 鏡 微 顯 子 Β 胃 之 訪 酸 碳 之 4 例 施 實 表 代 係 2 圖、 /~\ ο 2 者 圖片 [照 之 下 鏡 微 顯 子 電 之 鈣 酸 碳 之 IX 例 較 比 表 代 係 3 圖 /-\ 3 ο 圖片 [ 照 之 下 鏡 微 顯 子 電 之 鈣 酸 碳 之 2 例 較 比 表 代 係 4 圖 I—- ο 4 者 圖片 [照 之 下 本紙張尺度適用中國國家標準(CNS)A4規格（210 X 297公^! 1 "Ministry of Economic Affairs, Intellectual Property Bureau, Employees' Cooperatives, Printed Microscope Micro exons B, Stomach Visits, 4 Cases of Acid Carbon, 2 Cases, / ~ \ ο 2 Pictures The IX case is compared with the table 3 Figure /-\ 3 ο Picture [The 2 cases of the photomicrograph of the calcium microcarbon in the mirror are compared with the table 4 Figure I—- ο 4 pictures [Photo below the paper Standards apply to China National Standard (CNS) A4 specifications (210 X 297 male ^! 1 "