The prospecting area in Baritu copper polymetallic ore is located between the metallogenic belts in the middle and north section as well as in the southern section of Da hinggan ling metallogenic region. The metallogenic characteristics of this prospecting area are analyzed by comparing with the two metallogenic belts in the north and south. It is considered that the mineralization is mainly related to the strata of Duobao mountains of the Lower-Middle Ordovician, the acidic and alkali granite in the early Yanshan period as well as is quite different from the geological characteristics of the metallogenic belts in the south and north of Da hinggan ling area. Meanwhile, the metallogenic potential of the prospecting area is analyzed and several prospecting targets are determined.

In this paper, it is summarized the coking coal resources used by Baotou Steel in recent years. With the changes of supply and demand for coking coal resources, the characteristics of coal blending structure for 7 m coke oven as well as the changes of it and coke quality with the changes of resources are analyzed from the regional variation and variety variation trends of coking coal resources. Moreover, the coal substitution under the premise that the coke quality meets the manufacture requirements of blast furnace is studied and some suggestions on continuing to optimize the coal blending structure are put forward.

The temperature of upright flue for coke oven is fluctuated with the variations of various factors. In order to make the flue temperature meet the requirement of even heating for every carbonization chamber of the whole coke oven, the temperature of upright flue should be measured frequently and adjusted in time so that it could reach the specified standard temperature range to guarantee the coke cake is evenly mature within the required coking time. In the paper, it is discussed the adjustment and control measures of coke oven temperature for various production states of coke oven, which provide the technical references for adjustment and control of mean flue temperature for the same type of coke oven in the industry.

In this paper, it is proposed a method for constructing a prediction model of coke production quality with the neural network technique using the process and production data accumulated during the coke productions of Baotou Steel.

The coal injection system of 7^# and 8^# blast furnaces in Rare Earth Steel Iron-making Plant is with three coal injecting tanks, single pipeline and three distributors as well as the discharging is with the direct injection mode of rotary feeder. Since it was put into operation in 2014, there have been such problems as the failure of injection because of small amount of coal, the continuous damages of pressurizing group of coal injecting tank, the blockage of spray gun in the process of cleaning filter grate and the failure of complementation of two blast furnaces. They are gradually improved through improving the automatic coal injection system and optimizing the equipment wear.

In the paper, it is introduced the La_0.75Ce_0.25 (NiCoMnAl) _x (x = 4.95, 5.05, 5.15, 5.25) series of alloys were prepared with the induction melting method. The XRD test was carried out for the series of alloys and their phase structure was analyzed; their electrochemical performances were tested with the dual electrodes method and the PCT hydrogenation and dehydrogenation test was carried out. The results showed that all the four samples were with LaNi₅ phase of CaCu₅ structure, their phase composition was not changed by adjusting the stoichiometric ratio; their maximum hydrogen storage capacity decreased with the increase of stoichiometric ratio, their plateau pressure decreased first and then increased; with the gradual increase of stoichiometric ratio, their discharge capacity decreased gradually; the high-rate performance increased first and then decreased, their maximum 3C HRD value reached 89.6% when the stoichiometric ratio was 5.05; their cycling stability was enhanced with the increase of stoichiometric ratio.

In this paper, several selection methods for consistency of metal hydride-nickel battery were studied and they are applied for selecting batteries in actual productions. The results showed that the expected goals could be achieved so that the selected batteries were guaranteed to be with good consistency, which could meet the use requirements of high-end series and banked battery. As a result, the consistency of battery and product quality are improved as well as the hidden troubles of safety and after sale are eliminated effectively.

In this paper, the 600 MPa high-strength lightweight automobile beam steel is mainly studied combining with the technology and equipment conditions for 2 250 mm hot rolling production line of Baotou Steel. The BT610L beam steel with fine grain, good strength and toughness and formability was successfully developed with the alloying design of low C, Nb and Ti through laboratory research, industrialized trial production and process optimization.

In this paper, it is introduced the T [O]<0.001 5% is realized by such measures as optimizing the argon flow in calcium treatment process to improve the effects that deoxidation products float up into steel slag and improving the structure of tundish to improve flow field so that the flotation of inclusions is accelerated. As a result, the amount of Al₂O₃ inclusions in molten steel is effectively reduced, the DWTT properties of coiled sheet could meet the standard requirements as well as the aim of stable development and production of 22 mm thick hot-rolled strip with X80M pipeline steel was realized.

In this paper, the effects of rare earth Ce on the microstructure of slab and as-hot-rolled microstructure of oriented silicon steel are introduced. The cold acid and optical microscopy are used for observing whether there is slab with the rare earth and as-hot-rolled microstructure as well as comparing and analyzing the functions of rare earth. The results showed that the rare earth Ce could improve the microstructure of slab of oriented silicon steel, increase the ratio of equiaxed crystal and refine part of columnar crystal. As the second-phase particle, the rare earth Ce plays the role of pinning to prevent excessive growth of crystal grain during hot rolling, refine crystal grain and make the recrystallized grain increased.

A large number of technological breakthrough and process optimization researches on quality control of bloom SWRH82B of Baotou Steel have been carried out. In this paper, it is introduced the control level for inclusions of casting blank is improved as well as the amount, shape and size of inclusions in bloom are effectively controlled and improved through studying and optimizing the key technologies of controlling inclusions for converter, external refining and continuous casting process in steel making.

In the paper, it is introduced such problems as bending deformation, stress distribution, yield point elongation and strain aging of steel coils in the processes of uncoiling and straightening are analyzed with such knowledge as elastic-plastic mechanics and metal science aiming at the cross cracks defect during uncoiling hot rolled low carbon steel coil. It is considered that the main cause for cross cracks defect is not the problem of strip shape, but the yield point elongation common for low carbon steel so that the basis for eliminating the cross cracks defect is provided.

In this paper, it is introduced the design of chemical component for 400 MPa cold rolled slide steel as well as two hot rolling and annealing processes are adopted for trial production. Moreover, the mechanical properties, metallographic structure and test items of customers for steel coils were compared and analyzed. The final results showed that the products with low temperature coiling and low temperature annealing could satisfy the requirements of customers.

The experimental study on the hardenability of G105 and S135 grade petroleum drill pipe body steel produced by Baotou Steel is introduced in this paper. The results showed that the two steel grades were with good hardenability. With the quenching temperature of 880~900 ℃, the hardening layer depths of the minimum 50%, 90% and 95% martensite rockwell hardness numbers were 15 mm, 9 mm and 7 mm for G105 steel; the hardening layer depths of the minimum 50%, 90% and 95% martensite rockwell hardness numbers were 35 mm, 18 mm and 15 mm for S135 steel.

In this paper, the effects of rolling force on the elastic deformation of roller are discussed so as to obtain the effects of rolling force on shape of steel plate. The shape of steel plate for 2 250 mm hot continuous rolling production line of Baotou Steel is improved effectively by adjusting the load distribution of finishing mill group with the law.

In this paper, it is introduced such devices as the power supply and alarm system are designed and installed on locomotive to avoid the accidents of diesel engine caused by the unfulfillment of inspection or sudden serious leakage of intercooler during the operation of diesel engine. Meanwhile, a leakage detector is installed in the intake port of intercooler of diesel engine to monitor whether the intercooler is leaking or not so that the "water hammer" accident of diesel engine could be effectively avoided.

The characteristics of vibration signals for the rolling bearing of reducer of rolling mill in the bar work zone of Long Products Plant are non-linear and non-stationary so that the fault feature is difficult to be extracted. As a result, the classification of the SVM condition recognition model established based on this is with the problem of poor precision, so a method for condition recognition of rolling bearings based on VMD and SVM is proposed. The experimental and case analysis results showed that the fault feature information of rolling bearing could be accurately and effectively extracted to realize its condition recognition, which provides a new method for field application.

In the paper, a new fault diagnosis method for gearbox combining with the kurtosis of fast spectrum and 1.5 dimension spectrum is proposed aiming at the problem that the initial failure of gearbox is difficult to be recognized. Firstly, the maximum frequency band of kurtosis for original signal is filtrated with kurtosis of fast spectrum, and then the filtrated frequency band is analyzed with 1.5 dimension spectrum. Finally, the positions of faults for gearbox are determined by analyzing prominent components in the spectrogram so as to take precautions in advance. The method is with the analysis validation by project cases, it is fully proved that the fault information could be effectively extracted with this method, which plays a certain guiding role in engineering applications.

In this paper, it is introduced the technical improvement for some problems of iron notch drill of 8^# blast furnace of Baotou Steel in actual productions. The improvement technique is mainly taking the coordination mode of drill pipe and connecting sleeve as the starting point as well as they are redesigned. After the improvement, the iron notch drill is with such advantages as improving the efficiency of opening, reducing the labor intensity of workers as well as saving the costs of productions and manufacturing.

The quenched steel plate of wide and thick plate is a product with strong competitiveness. The stable operation of quenching machine is crucial for production and good network communication is its prerequisite. In this paper, the problems and improvement measures for network communication in the control system of quenching machine are mainly introduced.

In this paper, it is summarized the practical experiences in the governance process of stack effluents for 7 m large capacity coke oven of Coke Chemical Engineering Branch Co. of Baotou Steel, analyzed the main causes impacting the stack effluents for 7 m coke oven exceed standard. The indexes of stack effluents are controlled by such measures as adjusting heating and pressure schedules as well as strengthening oven body maintenance, which provide certain technical reference for governance of stack effluents for JNX3-70-2 coke oven.

In the paper, it is introduced the engineering practice of preparing concrete with refractory brick as coarse aggregate and slag powder as mineral admixture through taking the heat resistance concrete for ground of electrolytic cell workshop of Baotou Aluminium Manufacturer as the research subject. The functions of refractory brick and slag powder for heat resistance concrete are evaluated through comparing the intensity differences of concrete with every mix proportion after burning of high temperature with the heat-resisting ability of normal concrete. Compared with normal concrete without slag powder, its working performance and mechanical performance are higher, the heat resisting property is improved greatly and the practicability of concrete is guaranteed.

The electrolytic cell is the key equipment in electrolytic aluminium industry. Its cradle pot shell consists of two end side plates, two long side plates and a base plate. There are two types of end-side plate, circular arc and flat plate types and there are a large number of parts welded on it. The welding quantity of end-side plate is large and it is easy to be deformed, so the control of welding deformation is the key point and difficulty in the process of installing and welding it. In this paper, the manufacturing technology of flat-plate type end-side plate for electrolytic cell is mainly introduced.

In this paper, the possible main faults of gas chromatograph in the experimental operation process from inlet system of gas path to temperature system and then to sampling system are introduced as well as the corresponding solutions are put forward. Normally, the leakage test method is applied to solve such problem as the leakage in gas path system; the internal electric circuit problems in temperature system are solved by replacing components; different kinds of faults in sampling system could be judged, analyzed and solved with the sequential exclusion method.

The coke oven gas contains large amount of corrosive gas and it is difficult to be eliminated since it is accumulated in the pipeline after condensation. As a result, the corrosion of the pipeline is aggravated and the leak sources are formed so that the energy is wasted even the fire and explosion will occur. In this paper, several conventional temporary plugging methods for leak source of gas pipeline for coke oven under the condition of non-stop gas are introduced. The time and labor could be saved with them, they are relatively economical and practical as well as the safety can also meet the requirements, so they are worthy of discussing, promoting and referencing by fraternities.

The secondary preheating current is an important quality index for welding rails with GAAS80 type welding machine. In the welding process, it is with normal distribution. Whether the capability of secondary preheating current in welding process meeting the technical standards is sufficient or not can be effectively determined by analyzing the secondary preheating current with process capability index method, which is of great significance to improving the production efficiency of welding machine and ensuring stable quality.