The sample is dissolved by acid, residue is precipitated and filtered, the mixed flux of anhydrous sodium carbonate and boric acid is melted as well as it is mixed with acid dissolving test solution and the constant volume process is carried out. The contents of Si, Mn, P, Al and Cu in ferrotitanium are determined with the ICP-AES, the analytical spectral lines of elements to be determined and working parameters of instrument are optimized with this method as well as the disturbing effects of matrix elements Ti and Fe are investigated. The disturbing effects are eliminated with the mode of matrix matching and detection limit of the method is 0.000 3%~0.002 7%. The standard samples are determined with this method as well as measured values are consistent with certified values of all compositions, relative standard deviation (RSD, n=11) is 0.85%~9.03%, which could meet the analysis requirements of ferrotitanium.

The expense allocation of auxiliary production unit of Inner Mongolia Baotou Steel Union Co., Ltd. is studied in detail. The expenses are allocated to all the units based on their nature and actual services provided. As a result, each unit knows the expenses they bear more clearly, intuitively and transparently, which could provide the reference for auxiliary units to better provide market-oriented services next. At present, this method has been applied to the monthly cost accounting of company and the effects are good so that all units pay more attention to the cost control.

There are certain influences of fluorinion contained in barren liquor of organic amine on the effects of flue gas treatment in the process of roasting rare earth, so the accurate determination of fluorinion is required. Thus, the ion selective electrode method for determining the content of fluorinion in barren liquor of organic amine is established. The effects of pH value, temperature, accompanying ion and organic amine matrix on the determination results are studied as well as the interference elimination test of accompanying ion is carried out. The research results showed that the influences of organic amine matrix on determination of fluorine could be ignored, pH value was controlled at 5.0~6.0 with acetic acid-sodium acetate, interference of accompanying ion could be masked by adding 10 mL of total ionic strength adjustment buffer, analysis effect was the best with stirring for more than 5 min. when determined under the condition that the temperatures of detection and drawing working curves were the same. For this method, the mass concentration of fluorinion shows good linear relationship within the range of 0.04~40.00 μg/mL, detection limit is 0.021 μg/mL and quantification limit is 0.069 μg/mL.The standard recovery experiment for three barren liquor of organic amine samples is carried out based on this method and the recovery rate is 97.22%~104.10%. The method is applied for determining the fluorinion in three barren liquor of organic amine samples and the relative standard deviation (RSD, n=11) of results are 1.9%~2.4%. The results are basically consistent with those obtained with the chromatography.

In order to improve the charge discharge efficiency of nickel metal hydride (Ni-MH) battery at high temperature and meet the requirements of service environment, the charge and discharge performance of Ni-MH battery at high temperature are tested by adding NaOH into the conventional electrolyte. The experiment of comparing the charge discharge efficiency of Ni-MH battery added NaOH electrolyte with that of conventional Ni-MH battery is carried out at the environment temperatures of 55 ℃ and 65 ℃ separately. The results showed that the charge and discharge performance of Ni-MH battery added NaOH electrolyte was obviously higher than that of conventional Ni-MH battery in high temperature environment. The charge discharge efficiency is about 3 percentage points higher than that of conventional battery in high temperature environment of 55 ℃ and it is about 17~20 percentage points higher than that of conventional battery in high temperature environment of 65 ℃.

After years of operation, there are such problems for the crushing system in submontane dressing area of Baoshan Mining Co. as large number of equipment, low technical level and high maintenance costs. The factors affecting crushing operation indexes are found out through investigating and analyzing the current situation of existing crushing technology. The existing crushing circuit is transformed, the original crushing circuit is changed from “one closed circuit each three sections” to “one closed circuit each two sections”, add HP800 fine crusher to realize the matching running of two types of crushers and carry out the size optimization of sieve plate. The particle size of entering grinder is greatly reduced after the transformation, which creates favorable conditions for subsequent grinding and separation operations, the number of equipment as well as workload of equipment maintenance and inspection are reduced so that the comprehensive benefit of RMB 8.54 million yuan per year can be created.

In this paper, the cold rolling process of high magnetic induction oriented silicon steel 27QG090 is explored and studied with the cold rolling testing system of pilot scale test platform as well as the microstructure and macroscopic XRD texture of samples after cold rolling in laboratory are analyzed with the Zeiss microscope and X-ray diffractometer. The study results showed that its microstructure after cold rolling with different reduction ratios was fibrous that elongates along the rolling direction and shear bands in the uneven deformation zone could be observed. Its texture after cold rolling in laboratory was mainly the α texture and a little {001}<110> rotated cubic texture as well as cold rolling specifications preferred 0.27 mm and 0.23 mm. The macro texture of cold rolled sheet for industrial trial production consists of α texture and a small amount of rotated cubic textures, which mainly concentrates in {114}<110> and {115}<110> textures so that the microstructure and texture are consistent with those of cold rolling in laboratory.

In this paper, the influences of equipment failure for rolling mill on product quality and improvement measures are discussed by analyzing the relative movement of roll collar for KOCKS rolling mill and flange plate, detection and classification of movement through CAPAS system as well as vibration detection rules of transmission shaft for C module. The results showed that the bending of bars above Φ19 mm was caused by the deterioration of working condition for rolling mill as well as the wave bending of finished product could be effectively improved through maintaining the shaft sleeve and flange plate of rolling mill; the bending of bars below Φ19 mm was caused by the vibration of rolling mill as well as the wave bending of finished product could be obviously improved through repairing the movement and drive system of rolling mill. The axial drifting of roller is determined by strength of rolling bearing of drive shaft so that the vibration of rolling mill is affected. As a result, the wave bending of finished products could be obviously improved through using high quality rolling bearing.

In this paper, the three dimension(3D) modeling software is used to design the funnel-shaped fossula rotunda at iron notch suitable for large blast furnace, the manufacture method of funnel-shaped fossula rotunda at iron notch for monoblock casting is summarized as well as its technical characteristics and application in 7^# and 8^# blast furnaces of Baotou Steel are introduced. The experiment results showed that the service life of funnel-shaped fossula rotunda for monoblock casting was greatly improved and labor intensity of furnacemen was reduced, which were to the benefit of stable and trouble-free operation of blast furnace.

In the paper, the realization process and approaches of cost system in company are elaborated in detail by taking Qinghua Co. of Baotou Steel as an example. The accurate cost accounting and efficient cost management are realized with the cross-platform and cross-system modes the first time so that work procedures of cost business personnel are simplified and working efficiency is greatly improved. This mode is convenient, fast, efficient and with specific task allocations, which provides the feasible references for successfully implementing other subsequent information management systems.

In this paper, the cognition for ore genesis of iron, rare earth and niobium of Bayan Obo is put forward with comprehensive geological research means through surface geological survey, geostatistics, element spatial concentration regularity as well as researches of the latest deep drilling data and fluid inclusions. It is considered that the iron, rare earth and niobium ores are the genesis of igneous carbonate magma accompanied by multi-period hydrothermal metasomatism in later period, which provide important basis for Bayan Obo to establish the prospecting model, conduct metallogenic prediction and evaluation as well as accurately search for resource target regions.