水赤铁矿

In the course of groundwater towards the center of the depression cone, not only the dissolution of calcite, dolomite and hematite, the precipitation of siderite and melanterite may occur, but also the cation exchange between Na+ and Ca2+, Fe oxidation- reduction of Fe may occur.

地下水在向降落漏斗中心区的径流过程中，不但发生了方解石、白云石和赤铁矿的溶解作用以及菱铁矿和水绿矾的沉淀作用，而且发生了Na+与Ca2+的交换、铁氧化-还原反应等一系列复杂的水-岩作用。

In the course of groundwater towards the center of the depression cone, not only the dissolution of calcite, dolomite and hematite, the precipitation of siderite and melanterite may occur, but also the cation exchange between Na(superscript +) and Ca(superscript 2+), Fe oxidation-reduction of Fe may occur.

地下水在向降落漏斗中心区的径流过程中，不但发生了方解石、白云石和赤铁矿的溶解作用以及菱铁矿和水绿矾的沉淀作用，而且发生了Na与Ca(上标 2+)的交换、铁氧化－还原反应等一系列复杂的水－岩作用。

An SLon pilot continuous centrifugal concentrator (SLon pilot centrifugal concentrator) was used to study the effects of drum rotation speed and reciprocating velocity of water sprays on the separation performance of the concentrator under the optimum conditions of feed volume flow rate (24.5±0.4) L/min, feed solids content 20% and impacting pressure of water sprays 0.45 MPa, with the high gradient magnetic separation concentrate assaying 52.42% Fe from fine hematite tailings as test material.

摘 要：采用SLon实验型连续式离心机(简称SLon实验型离心机)，以高梯度磁选细粒赤铁矿尾矿得到的磁性产物(52.42% Fe)为试样，在给料体积速率为(24.5±0.4) L/min、给料固体浓度为20%和水束流冲击压力为0.45 MPa的条件下，研究转鼓转速和水束流往复速度对连续离心分离指标的影响。

P adsorbed by ferrihydrate was much more difficult to be desorbed than those by goethite and hematite.The large active surfaces of ferrihydrate contribute little on P desorption.

水铁矿吸附的磷比针铁矿和赤铁矿所吸附的磷更难解吸；水铁矿的大量活性表面并没有表现出增加磷释放的作用。

The adsorption of goethite, hematite and amorphous ferrihydrite for phosphate was studied through the isothermal adsorption experiment.

本文通过铁氧化物对水溶液中磷酸根的等温吸附实验，初步对比研究了针铁矿、合成氧化铁黄、赤铁矿和无定形氢氧化铁对水中低浓度磷的吸附作用。

"Subsequent analysis of the flask material and dust has shown that the magnetite was transformed into the red mineral hematite, through a completely mechanical process without the presence of water at any stage of this process," said Merrison, who presented the work yesterday at the European Planetary Science Congress in Germany.

&随后对于烧瓶内的材料和粉尘的分析表明，磁铁矿通过一个在过程中的任何阶段都没有水存在的完全的机械过程，变成了红色的矿物赤铁矿，&麦里逊说。他昨天在德国召开的欧洲行星科学大会上对这项工作做了介绍。

It is shown that the main minerals in the slag are quartz, gypsum, mullite and hematite; an obvious characteristic apex of gypsum appears in the DSC curve when dehydrating but the apex is low total amount of SiO2, SO3, Al2O3, CaO and Fe2O3 is above 80%; there are several kinds of sulphates, not only calcium sulphate but also other sulphates with high solubility.

结果表明，电解锰渣中的主要结晶矿物为石英、二水石膏、莫来石及赤铁矿，电解锰渣有比较明显的石膏受热脱水峰，但峰值小；电解锰渣中SiO2、SO3、Al2O3、CaO和Fe2O3的总量占80%以上；电解锰渣中硫酸盐有二水石膏，也有含量较高的大溶解度硫酸盐。

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。。。。