【正文】 粘劑和密封劑中無機(jī)填料應(yīng)用水平的提高和重質(zhì)碳酸鈣產(chǎn)品質(zhì)量的提高，重質(zhì)碳酸鈣在膠粘劑和密封劑中將有良好的應(yīng)用前景。目前在橡膠制品領(lǐng)域，重質(zhì)碳酸鈣的應(yīng)用比重要小于輕質(zhì)碳酸鈣，而且增長速度將要小于造紙和塑料領(lǐng)域，但超細(xì)活性重質(zhì)碳酸鈣在橡膠制品中的比重將不斷提高，2002年碳酸鈣在橡膠填料中消費(fèi)為9萬噸，預(yù)測2006年為5萬噸，2010年為12萬噸，％。碳酸鈣是橡膠制品的主要無機(jī)非金屬填料之一，據(jù)估計約占目前橡膠制品中無機(jī)非金屬填料總用量的1/4，僅次于陶土，其用量約占無機(jī)礦物填料總量的27％。我國年耗膠量達(dá)235萬噸，僅次于美國，居世界第二位。目前我國重質(zhì)碳酸鈣的缺點是粒度偏粗，表面未經(jīng)改性處理，將來如能選用優(yōu)質(zhì)方解石原料加工出滿足新型樹脂漆及其他油漆質(zhì)量要求的體質(zhì)顏料，重質(zhì)碳酸鈣在油漆中的用量還將增加。初級產(chǎn)品用于生產(chǎn)室內(nèi)和室外淺色涂料噴涂料壁，精加工產(chǎn)品用于高亮度噴涂。重質(zhì)碳酸鈣在涂料中主要是代替Ti02和其他顏料，也是主要的體質(zhì)顏料，成本低、亮度合乎要求，粒度分布可以控制，細(xì)度碳酸鈣又有很好的減光性能和抗老化性能。2005年造紙礦物顏料總消費(fèi)量可能達(dá)到350萬噸，其中碳酸鈣約170萬噸．造紙業(yè)也將成為碳酸鈣最大的應(yīng)用市場。在塑料編織袋，編織布，打包袋中主要使用325目的粗粒重鈣產(chǎn)品；在塑料地板，地板革，部分人造革，地板卷材、塑料鞋、聚氯乙烯百葉窗，聚氯乙烯護(hù)墻板中使用325目—10μm細(xì)磨重鈣作填料；在聚氯乙烯和聚乙烯電纜護(hù)套料中，使用600目—5μm的超細(xì)重鈣產(chǎn)品但需進(jìn)行表面處理，且多與輕鈣混用；在聚乙烯薄膜、聚氯乙烯等塑料薄膜制品中使用的超細(xì)，活性重鈣，對其粒徑及粒徑分布要求嚴(yán)格，另有部分重鈣用于工程塑料和其他塑料制品上。未來的幾年和十幾年里，我國塑料加工工業(yè)對碳酸鈣產(chǎn)品的需求有增無減，占國內(nèi)消費(fèi)結(jié)構(gòu)總量的40％，為碳酸鈣工業(yè)的發(fā)展提供了良好的機(jī)遇和光明的市場前景。而我國碳酸鈣產(chǎn)品主要應(yīng)用集中在塑料，造紙，橡膠、涂料，油墨、膠粘劑、日用化工等領(lǐng)域。與此同時，我國對納米級碳酸鈣的科研及其工業(yè)應(yīng)用的研究，受到了高度的重視，并加快了工業(yè)化步伐。從產(chǎn)品結(jié)構(gòu)采看，碳酸鈣產(chǎn)量粒徑為200—325目產(chǎn)品占50％；325目—10μm產(chǎn)品約占35％；lOμm以下產(chǎn)品占15％。從協(xié)會調(diào)查分析的150多家生產(chǎn)企業(yè)采看，年生產(chǎn)規(guī)模5萬噸以上的占4％左右，年生產(chǎn)規(guī)模2萬—5萬噸的占10％，年生產(chǎn)規(guī)模1萬—2萬噸的占26％，其他60％左右的企業(yè)生產(chǎn)規(guī)模小于1萬噸。第二章 市場預(yù)測一、國內(nèi)碳酸鈣工業(yè)發(fā)展現(xiàn)狀碳酸鈣工業(yè)作為非金屬礦工業(yè)的一個分支，在我國發(fā)展迅猛，已成為非金屬礦工業(yè)的重要產(chǎn)業(yè)。同時項目可安排200余人就業(yè)?？傊浇馐V產(chǎn)資源儲量大、品位高，方解石呈巨晶產(chǎn)出，呈無色透明白色，三組菱面體解理完全，原礦石未發(fā)現(xiàn)其它礦物包裹體，現(xiàn)場采集的方解石樣品送國土資源部武漢礦產(chǎn)資源監(jiān)督檢測中心優(yōu)從化學(xué)成分檢測和中國地質(zhì)大學(xué)分析測度中心做白度檢測，確定為方解石礦品質(zhì)好，附加值高。本項目的實施和利于聯(lián)合初級加工廠，起到龍頭帶動作用，真正形成一個大產(chǎn)業(yè)，一個集團(tuán)，全面整合優(yōu)勢資源，最大限度的提高產(chǎn)品附加值。三、投資的必要性湖北咸豐縣對方解石資源的開發(fā)以水磨石為起點，1989年開始進(jìn)行初級粉體加主要銷往全州及重慶、湖南用于建筑涂料。中國地質(zhì)大學(xué)為本公司提供強(qiáng)有力技術(shù)支撐，生產(chǎn)工藝自動化程度高、規(guī)范科學(xué)、軟技術(shù)是國家發(fā)明專利，引進(jìn)先進(jìn)的德國濕法超細(xì)設(shè)備。發(fā)展咸豐縣地方工業(yè)，用高科技手段開發(fā)地方優(yōu)勢資源，增強(qiáng)地方經(jīng)濟(jì)實力刻不容緩。（5）現(xiàn)場踏勘情況研究范圍本報告對市場需求、產(chǎn)品方案、生產(chǎn)規(guī)模、工藝技術(shù)方案、原輔助材料及燃料供應(yīng)，建廠條件和廠址、公用工程和輔助設(shè)施方案，環(huán)境保護(hù)和勞動安全，公司組織、勞動定員，項目實施規(guī)劃、投資估算和資金籌措及財務(wù)評價等問題進(jìn)行研究。（2）采用國內(nèi)市場上最先進(jìn)的設(shè)備和中國地質(zhì)大學(xué)最新的科技成果，成熟的生產(chǎn)工藝。When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed. The only passengers, a young woman and her two baby daughters, were unhurt. It was the middle of winter. Snowlesson75m Brinksley Meers, and my other name is Gloria Gleam. Now you get out of here fast !39。 said the sheriff with a sneer. 39。39。m Rockwall Slinger and this is Merlin Greeves.39。 don39。 Look, sheriff, 39。 m sheriff here. Do you see that notice ? It says No Campingin case you can39。 he shouted: 39。39。 No newspaper men, no film fans! Why don39。t be better, Gloria,39。39。This is a wonderful place for a piic,39。Lesson74 Out of the limelight 舞臺之外Little boys who play truant from school are unimaginative. A quiet day39。s son, Donald, also set up a world record. Like his father, he was driving a car called Bluebird. his father39。Lesson72 A car called Bluebird “藍(lán)鳥”汽車Lesson71 A famous clock 一個著名的大鐘 Red for danger 危險的紅色 he said, in a mournful voice,39。 I continued driving and after some time, the examiner tapped loudly. Though the sound could be heard clearly, it took me a long time to react. I suddenly pressed the brake pedal hard and we were both thrown forward. The examiner looked at me sadly. 39。I was being tested for a driving licence for the third time. I had been asked to drive in heavy traffic and had done so successfully. After having been instructed to drive out of town, I began to acquire confidence. Sure that I had passed, I was almost beginning to enjoy my test. The examiner must have been pleased with my performance, for he smiled and said, 39。s always plenty to read in the 39。 he answered.39。 Then I39。but I39?！?Not at all,39。Would you mind my ing with you ?39。 I39。 No, not at all,39。 I was just wondering how to spend the morninguntil I saw you. You39。Hullo, Elizabeth,39。 I said. 39。39。Lesson68 Persistent 糾纏不休Haroun Tazieff the Polish scientist, has spent his lifetime studying active volcanoes and deep caves in all parts of the world. In 1948, he went to lake Kivu in the Congo to observe a new volcano which he later named Kituro. Tazieff was able to set up his camp very close to the volcano while it was erupting violently. Though he managed to take a number of brilliant photographs, he could not stay near the volcano for very long. He noticed that a river of liquid rock was ing towards him. It threatened to surround him pletely, but Tazieff managed to escape just in time. He waited until the volcano became quiet and he was able to return two days later. This time, he managed to climb into the mouth of Kituro so that he could take photographsThe Hatheld Puffin is a modern aeroplane, but its designer, Mr John Wimpenny, is finding it difficult to get it off the ground. The reason for this is that this plane is also a bicycle. Its pilot has to pedal hard to get it into the air. After Mr Wimpenny had the plane built, it was tested thoroughly. In 1961, it was the first manpowered aircraft to fly half a mile. While being flown by a champion amateur cyclist in 1963, the plane crashed on an airfield. Since then, Mr Wimpenny has had it rebuilt. He has had the length of the wings increased so that they now measure 93 feetalmost as long as those of a Dakota. Many people have shown interest in this new and unusual sport. But though air cyclists may learn how to fly over short distances, and may, eventually, even get across the English Channel, it is doubtful whether they will ever cycle across the Atlantic.so it was fortunate that we didn39。Jumbo must weigh a few tons,39。guard of honour39。Last Christmas, the circus owner, Jimmy Gates, decided to take some presents to a children39。In l858, a French engineer, Aime Thome de Gamond, arrived in England with a plan for a twentyone mile tunnel across the English Channel. He said that it would be possible to build a platform in the centre of the Channel. This platform would serve as a port and a railway station. The tunnel would be wellventilated if tall chimneys were built above sealevel. In 1860, a better plan was put forward by an Englishman, William Low. He suggested that a double railway tunnel should be built. This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it. Fortytwo years later a tunnel was actually begun. If, at the time