JPS58176151A - Clinker quality control for cement baking facilities - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The invention is related to the quality control method of cement firing equipment. Common types of cement firing equipment include crushing 4
Preheating the mixer! ! ! , a calcining furnace and a rotary kiln are connected to this unit, and lime'J [w
The kiln is designed to supply clay raw materials such as clay raw materials, and finally burn the raw materials in the KO-tari kiln to produce clinker. In such a typical cement firing installation III, in order to maintain a constant quality of clinker, samples of each raw material supplied to the crusher are frequently analyzed for 5 seconds, and the results are taken into consideration before crushing. Controls the mixing ratio of raw materials supplied to the i[I position. In this case, there is a disadvantage that the analysis work becomes complicated if there are many types of wood in the supply warehouse, and furthermore, the analysis work cannot be omitted, and the samples collected from each raw material are not representative. Controlling the raw material supply and blending ratio through analysis ＠The chain between the oak and the actual product is thick. Moreover, it is difficult to adjust the quality of the raw materials once stored for mixing, so it is necessary to wait until the raw materials in the mixing device run out. In addition, manufacturers who try to control clinker quality due to market needs cannot change the quality at will because of the same whitening process. By the way, in the field of cement production, clay raw materials containing combustible materials such as fm shale ai-1 coal slag are used from the hard point of energy saving. However, methods are being developed to replace the expensive and high value-added heavy oil that has been used in the past. In this method, in order to effectively utilize the calorific value of the combustible material, the clay raw material containing the combustible material is heated in a calciner k[
KiI has already proposed a pleat supply method. However, in this method, the clayey raw material containing a thermoplastic substance and other raw materials necessary for clinker are mixed in a calcining furnace, so the required component composition of cement clinker is as follows: Before the raw material is fed to the preheater and calciner, it needs to be packed in a K11ll bottle. In view of these points, the present invention has two lines of raw material supply lines, one for supplying the raw material to the calciner via the preheater and the other for supplying the calciner to the calciner. Cement fired membrane VIIK dude

[Talinka quality in the cement firing facility that allows clinker quality to be controlled as desired]
This method was developed with the aim of providing a method for controlling raw material powder samples supplied from each grinding device to the heating homogenizer, and analyzing the chemical components of the raw materials. New control-' sulfuric acid rate and iron rate are calculated considering the 66 water a rate and the control sulfuric acid sulfur and iron sulfur in the previous 1, and the sulfuric acid and iron sulfuric acids are supplied to the % heating homogenizer using the silicon sulfur and iron sulfur. The ratio of the raw materials to be mixed is controlled, and the raw material powder samples supplied from each mixed Jvj Noke goyosui fI! A new Liu official hydraulic force is calculated by appreciating the rate, and preheating 41 and temporary -
It is designed to control the ratio of raw materials supplied at one time. The following 1 invention is a! ! I will explain from the implementation 1'lK shown on page 1. Figure 1 shows a plotter diagram of a cement firing film (1) used in the uninvented clinker quality method (1). A metering feeder 3 for clay raw materials containing 2% combustible materials and a metering feeder 4 for horse raw materials of type or IIWIL type are provided, respectively. There is. Of these, the quantitative feeder 2 for clay raw materials that do not contain flammable substances does not need to be installed, and the quantitative feeder 4 for sub-JI materials can be used to supply sub-JI materials as necessary. ing. The quantitative feeder 1.2 is equipped with an IK. In addition, the quantitative feeder 3.4 is 11 f IP @ 6 Kl
), each of the raw materials supplied in fixed quantities is ground into powder for 5 or 6 yen! K is set to crush IK. Each grinding device 5.6 has a heating homogenizer 7.
．． 8 are connected to each other in order to uniformly mix the powdered N family in the crusher 5.6. In addition, a part of the raw material supplied from each crushing device S, 6 to the mixing homogeneous fold 117.8 is used as a sample in the Nangute 9. It is set to K so that it is more adopted than IOK. A quantitative feeder 1 is connected to the homogenizer 7 at the front, and is configured to supply a constant amount of the homogenized raw material powder to the preheating and heating chamber. Further, a fixed quantity feeder port is connected to the above-mentioned single homogenizer 8, and is configured to supply a fixed quantity of the converted raw 'p# powder to the calcining furnace 14. And, *Preheated in preheating 4112, clayey powder containing no combustible material and calcareous raw material powder 'pF1)
The powder is fed into the calcining furnace 14, where it is mixed with clay raw material powder containing combustible substances and fI4 Fengke powder added as necessary. The combustible substances in the raw materials are completely combusted in this calcining furnace. The remaining raw materials are fed with ■-Tarikirushi mK and fired to become clinker. Each of the above-mentioned 1 mixture is quantified from the homogenizer 7.8. Feeder 13. A part of the raw material supplied to 13 is supplied to Sangra 16 as a sample.
．． K is expected to be hired by 17. The above is the structure of the leakage firing membrane in which the present invention is overused. It is also possible to connect to the device 5 and supply only the clay raw material containing combustible materials to the other edge crushing device 6.The configuration after 82 m of crushing S, 6 is shown in Figure 1. Since it is the same as that, the oral tradition has been omitted. Next, the clinker quality control method of the present invention will be explained in detail. ,
I will clarify. K, which values clinker quality, has some specifics, but in general, the hydraulic hardness factor (hereinafter abbreviated as HM) is 1! There are acid ratio (hereinafter abbreviated as IMj) and iron wheel (hereinafter abbreviated as FIM), and lime saturation degree IJF may be used instead of water hardness HM. The clinker quality control method of the present invention can be roughly divided into two types:
i! It is divided into i, and among these, the control of over 11m is. Analyze the sample taken with sampler 9.10 of RII above mixing homogenizer 17.8.
The subsequent control is KM control performed by analyzing the samples taken in the sunglasses 16 and 17 downstream of the mixing homogenizer 7.8. First, the front stage lIM and IM11 control will be explained step by step.・Step 1: Analyze the chemical components of the raw material powder used in Sangra 9.10.・The chemical composition value of the raw material analyzed in Step 2 and Step 1 and 1*HM,
From 1il1811 and @KIN and k, calculate the feed rate of clayey raw materials and auxiliary raw materials containing combustible materials to the feedrate of clayey raw materials that do not contain combustible materials and combustible materials.・Pre-@IM and pre-fixing using the chemical analysis value and feed rate of Snap 3 Nistetsu 71.2! Calculate M... ・Step 4; 6118M and the stand - ■My father-in-law and Yomu IM and Yobo! A new control IM and control mxmt are calculated using the following formula. (New control fat y) = (Mausoleum V so-called official 8-tan Hri, - target 8-rei →
-BM) (New control I binding - I fight control! Lid) Published 8M (
@Ne! M→-I Rei) C Kote, G dece G1y4 kt
Usually 0. s~0.
It has a value of 1.・New control obtained from Step 5 and Step 4! @8M and new control! Using the foot, the ratio of metering feeders that supply the same crushing device (Kjllll), that is, the ratio of metering feeders 1 and 2 in crushing device 5, and the ratio of metering feeders 1 and 2 in crushing device 6, and the ratio of metering feeders 3 and 4 in crushing device 6. Calculate the ratio and control W.・Stetsu 16: For a certain period of time (approximately 10 minutes to φ minutes), the medullary Ilk is carried out again on Step 11.
~ 5 operations with IIIki11 tools. By such steps 1 to 60, one homogenizer 7
．． 8 stores raw materials subjected to 8M and 1M control. Further, regarding HMK, the component composition is close to &X eye sign aIi. In addition, in step 5, it is necessary to know the individual chemical component values of each of the 1 calcareous N family, clay I [raw materials and auxiliary raw materials, but in reality, it is necessary to know the representative values of each component value. If you adopt it, its superior value VG! There is not much need to analyze it, because the control method adopted in step 4 is the control for the previous value, and the result of the analysis in the second circle gives a relative value of 11141IIl'. Next, I will explain the VK level HM request step by step - Step 7: Sunpura 16, 1? We conduct chemical composition analysis of the raw material powder obtained under the license. - Step 8: Calculate the supply HM based on the chemical component value of the raw material analyzed in Step 7 and the feed rate of the quantitative feeders 11 and 13. - Step 9: Calculate the difference between the eye 41HM and the supply HM, and calculate a new control 11M using the following formula. (II)
IHM→IIHM) Here, %- is g to adjust 91111 of control 1! For wings, the value is usually between 1 and 0.3.・New control HM obtained in step 10 and step 9 and mixed uniformity aS97, 8
Quantitative feeder 1 calculates the representative component values of the raw materials supplied from
1 and the mouth ratio are calculated and controlled by 111I.・Step 11 d After a certain period of time (approximately 1-2 hours) has passed, repeat steps 7 to 1.
Repeat operation O. The clinker product * that is produced from the rotary medium run speed by the control of steps l to U as explained above is within ±O, aS of the deviation of KM, IM and! It becomes possible to control Kl within ±0.3 of the deviation. Incidentally, even if the raw material does not contain a flammable substance, the above-mentioned control method can be overused by processing the raw material in two lines and supplying the raw material separately to the preheater or temporary furnace. As explained above, the clinker quality control method for cement fired membranes according to the present invention controls the quality of the water curtain by analyzing the chemical components of the sample on the upstream side of each mixing homogenizer in the 2 allt rows, and further mixes the clinker. The quality of the hydraulic force was controlled again recently by chemical component analysis of the sample on the downstream side of the homogenizer, so the linker product is in good condition.
Not only can it be maintained, but also the quality control of the hydraulic rate can be maintained downstream of the mixing and leveling equipment. quality, i
Yes, it can be changed easily. Also, i! :# The control of the table and the iron car is only by sample analysis in R1aK above the mixing homogenizer, but this alone is sufficient to guarantee sinker quality. Moreover, its control is easy. Furthermore, since the control takes into account the previous control value,
It is not necessary to frequently carry out chemical analysis of each raw material, and one operation is simple.

[Brief explanation of the drawing]

Figure 1 shows an example of cement firing equipment in which the clinker quality control method of the present invention is used extensively.
The figure is a block diagram of main parts of the first modified example. 1, 2, 3, 4, 11, 13--Quantitative feeder, 5.6...Crushing 11t, 7.8...Mixing homogenizer, 9.10.16゜17...S/gram , 12...
Preheater, 14・-φ calcining furnace, 15... rotor 17 l
+? Run.

Claims (1)

[Claims] A system for supplying the calciner KM from the crusher through a mixed material device and a preheater, and a system for supplying the calciner K from the crusher to another mixing homogenizer. The kiln has a line for supplying raw materials of 1/*fist, and the raw materials are supplied from the calcining furnace to the four-tali kiln for firing. In cement manufacturing clinker - film formation w. The raw material powder samples supplied from each crushing device to the mixing homogenizer are heated and the chemical components of the raw materials are analyzed, and this chemical analysis value, 1 standard water hardness, the previous control scale**, and iron-clad considerations are calculated. and new control silicic acid rate. Calculating the iron army, this Ukego R41111m! The ratio of m-family supplied to each mixing homogenizer is controlled by the iron rate and iron rate. Then, the raw material powder samples to be supplied to the pre-S* or calcining furnace are collected from each heating homogenizer, and the chemical composition of the raw materials is analyzed again, taking into account this chemical analysis value and the previous vIs# hydraulic cement. Calculate a new hydraulic force for control, and use this I4
The ratio of raw materials supplied to the preheater and calciner by the hydraulic force for 1Ill! A clinker quality control method for cement firing installation, characterized in that: