白云石

The carbonation conversions of calcium acetate and calcium magnesium acetate from the acetification of limestone and dolomite reacting by acetic acid solution were investigated under different conditions during multiple calcination-carbonation cycles.

在不同反应条件下分别研究了石灰石和白云石的醋酸化产物醋酸钙和醋酸钙镁在循环煅烧－碳酸化过程中的碳酸化转化率。

XZM Ultrafine mill is a machine for producing fineness and ultra-powder. It is mainly used for grinding the materials whose hardness is middle and low, moisture below 6%, and Moths hardness should be blow 9 grade and non-explosion and non-flammability, such as: calcite, chalk, limestone, dolomite, kaolin, bentonite, steatite, mica, magnesite, illite, pyrophillite, vermiculite, meerschaum, attapulgite, diatomite, barite, gypsum, alunite, graphite, fluorite, phosphate ore, potassium ore pumice, etc.

XZM 中速微粉磨是一种细粉及超细粉的加工设备，它主要适用于中、低硬度物料的研磨粉碎，如高岭土、石灰石、方解石、滑石、大理石、重晶石、石膏、白垩、白云石、膨润土、云母、菱镁矿、伊利石、叶腊石、蛭石、海泡石、凹凸棒石、累托石、硅藻土、石墨、明矾石、萤石、磷矿石、钾矿石、浮石等湿度小于6％，莫氏硬度在9级以下非易燃易爆的非金属物料。

The present invention is concerned with a method for the extraction of magnesium from magnesium-containing materials such as magnesite, dolomite and silicates materials like serpentine residues, products from the amphibole or pyroxene group.

本发明涉及一种从含镁原料萃取镁的方法，该含镁原料包括菱镁矿、白云石、含镁硅酸盐物质象蛇纹石残渣，来自角闪岩及辉石类的产品。

Locally dolomite and anhydrite are important as cements.

局部地方白云石和硬石膏也是重要的胶结物。

IV. carbonate mineral contain iron, include siderite, ankerite, etc.

四、含铁碳酸盐矿物：有菱铁矿及铁白云石等。

IV. carbonate mineral contain iron granite and marble , include siderite, ankerite, etc.

四、含铁碳酸盐矿物：有菱铁矿及铁白云石等。

According to the fact that dawsonite and ankerite are the authigenic minerals forming at latest in sandstone, CO2 infilling was relatively late, possibly 46.2±2.1 Ma or later.

结合片钠铝石和铁白云石是砂岩中最晚形成的自生矿物，认为CO2注入时间相对较晚，可能为46.2±2.1Ma或者更晚。

Deep buried dolostones in study areas mainly consist of fine or medium dolomites, which crystals are euhedral or subhedral.

认为研究区深埋藏白云岩主要由细晶或中晶白云石组成，白云石呈自形或半自形晶。

SEM images show that the dolomite take the shape of the spheric aggregations with the diameter of 1~2μm, associated with the pyrite aggregations at the similar size.

对这些含白云石矿物的湖底沉积物所进行的扫描电镜研究发现了其中呈球状、椭球状，大小1~2μm的白云石集合体及其伴生的草莓状黄铁矿的存在。

The three types of dolomite have similar strontium content with higher ~(87)Sr/~(86)Sr ratios to some extent than that of the coeval seawater.The difterenee of distribution coefficient of Sr in calciteand dolomite is the most important control factor on the strontium content in dolomites.

三种类型白云岩具有类似的锶含量，但其(87)~Sr/(86)~Sr 比值均不同程度地高于同期海水值，锶在白云石和方解石中分配系数的差别是影响白云石化过程中白云石锶含量最为重要的因素。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。