阅读说明：本技术 一种基于凝胶指数的泥浆固化配料试验定量分析方法 (Quantitative analysis method for slurry curing batching test based on gel index ) 是由 刘立毅 季光明 刘伟 杜剑 胡芳 袁新亮 于 2020-07-27 设计创作，主要内容包括：本发明的一种基于凝胶指数的泥浆固化配料试验定量分析方法,包括如下步骤：S1、取定量定浓度的泥浆于玻璃容器中；S2、向一个玻璃容器试验泥浆中不添加混凝材料,记为空白组,向其他的玻璃容器试验泥浆中分别添加n组不同质量比例的混凝材料,充分搅拌均匀,n为大于零的自然整数；S3、在设定的混凝反应间隔时段测定所有玻璃容器内的泥浆凝胶指数P；S4、对比相同时间记录的凝胶指数P,相同时间,凝胶指数P越大,混凝剂凝胶效能N越强。本发明通过对各种泥浆固化配料的凝胶指数的测定,在设置具有同一性的空白对照Po,达成相对比较方式,快速确定各种泥浆固化前处理混凝配料的优劣,最终达到筛选效能较高的泥浆固化混凝配方的目标。(The invention relates to a quantitative analysis method for a mud curing ingredient test based on a gel index, which comprises the following steps of: s1, putting the mud with fixed quantity and concentration into a glass container; s2, adding no coagulating material into one glass container test slurry, marking as a blank group, adding n groups of coagulating materials with different mass proportions into other glass container test slurries respectively, and fully and uniformly stirring, wherein n is a natural integer larger than zero; s3, measuring the mud gel index P in all glass containers at the set interval period of the coagulation reaction; s4, comparing the gel indexes P recorded at the same time, wherein the larger the gel index P is at the same time, the stronger the coagulant gel efficiency N is. According to the invention, through measuring the gel indexes of various slurry curing ingredients, a relative comparison mode is achieved by setting a blank control Po with identity, the advantages and disadvantages of the various slurry curing pretreatment ingredients are rapidly determined, and finally the aim of screening a slurry curing coagulation formula with higher efficiency is achieved.)

1. A quantitative analysis method for a slurry curing batching test based on a gel index is characterized by comprising the following steps: the method comprises the following steps:

s1, putting the mud with fixed quantity and concentration into a glass container;

s2, adding no coagulant into one glass container test slurry, marking as blank group, adding n groups of coagulants with different proportions into other glass container test slurry respectively, and fully and uniformly stirring, wherein n is a natural integer larger than zero;

s3, measuring the mud gel index P in all glass containers at the set interval period of the coagulation reaction;

s4, comparing the gel indexes P recorded at the same time, wherein the larger the gel index P is at the same time, the stronger the coagulant gel efficiency N is.

2. The quantitative analysis method for the mud set compound test based on the gel index as claimed in claim 1, wherein: the coagulant in the step S2 comprises m coagulation materials which are combined into C¹ _m+C² _m+C³ _m……+C^m _mEach coagulant is provided with n groups of levels with different addition mass proportions, and m is a natural integer greater than zero.

3. The quantitative analysis method for the mud set compound test based on the gel index as claimed in claim 2, wherein: average gel performance at n-group level for a single coagulant when m is 1

4. The quantitative analysis method for the mud set compound test based on the gel index as claimed in claim 3, wherein: m is>1 hour, average gel efficiency of each compound coagulant under n groups of levelsP_i ^AmDenotes the m different mixesGel index P at group i level of coagulant.

5. The method for quantitative analysis of mud set compound test based on gel index as claimed in claim 4, wherein: when m is greater than 1, N is a positive value, which shows that A1/A2/…. Am compound coagulant gel is matched and mutually promoted; the N value is a negative value, which indicates that A1/A2/… Am compound coagulant gel is mutually exclusive.

6. The method for quantitative analysis of mud set compound test based on gel index as claimed in claim 5, wherein: also comprises setting a target control group, adding a certain proportion of the adopted coagulant into the quantitative and fixed-concentration slurry to obtain the gel index P_ckComparison of P_i ^A1P_i ^A2P_i ^A3……P_i ^AmAnd P_ckJudging whether the Am compound coagulant is a qualified coagulant under the condition of the ith group addition mass ratio or not according to the value of (A1/A2/…).

7. The method for quantitative analysis of mud set compound test based on gel index as claimed in claim 6, wherein: when P is present_i ^A1P_i ^A2P_i ^A3……P_i ^AmAnd P_ckThe absolute value of the difference is less than that of other formulas and P_ckAnd selecting A1/A2/… as the absolute value of the difference, wherein Am compound coagulant is a qualified formula under the level of the ith group.

8. The method for quantitative analysis of mud set compound test based on gel index as claimed in claim 6, wherein: when P is present_i ^A1P_i ^A2P_i ^A3……P_i ^AmGreater than P_ckComparison of P_i-1 ^A1P_i-1 ^A2P_i-1 ^A3……P_i-1 ^AmAnd P_i+1 ^A1P_i+1 ^A2P_i+1 ^A3……P_i+1 ^AmAnd (3) judging the change trend of the A1/A2 …. Am compound coagulant along with the addition mass ratio, and properly setting a plurality of groups of different mixture ratios near the numerical value of the i-th group of addition mass ratio to find out the optimal mixture ratio of the A1/A2 …. Am compound coagulant.

9. The quantitative analysis method for the mud set compound test based on the gel index as claimed in claim 1, wherein: the coagulation reaction interval period set in step S3 is 0.5h, 1.0h, 1.5h, or 2.0 h.

Technical Field

The invention relates to the technical field of solid waste treatment, in particular to a quantitative analysis method for a mud solidification batching test based on a gel index.

Background

The solidification treatment of building mud, river and lake sludge and other municipal sludge generally involves the selection of coagulation ingredients for the pretreatment of the mud, and the coagulation materials mainly comprise: hydraulic crystalline minerals, organic inorganic salts or polymeric salts, and the like. However, no effective experimental detection method exists for screening and judging the quality of the slurry curing coagulant formula. The pretreatment formula of the mechanical dehydration and solidification mode of the slurry is selected, a large amount of slurry and a large amount of coagulation ingredients are mixed and then directly loaded on a machine (such as a centrifugal machine, a belt type machine, a plate frame machine and the like) for testing, the testing actually belongs to the field of pilot scale testing, basic ingredient test support is lacked, labor, time and material are wasted, the testing environment is complex, the testing error is large, and an accurate conclusion is often difficult to obtain.

Disclosure of Invention

The invention aims to provide a quantitative analysis method for a slurry curing ingredient test based on a gel index, which aims to finally achieve the aim of screening a slurry curing and coagulating formula with higher efficiency by the advantages and disadvantages of various slurry curing and coagulating ingredients before the treatment aiming at the defects in the prior art.

The invention relates to a quantitative analysis method for a mud curing ingredient test based on a gel index, which comprises the following steps of:

s1, putting the mud with fixed quantity and concentration into a glass container;

s2, adding no coagulating material into one glass container test slurry, marking as a blank group, adding n groups of coagulating materials with different mass proportions into other glass container test slurries respectively, and fully and uniformly stirring, wherein n is a natural integer larger than zero;

s3, measuring the mud gel index P in all glass containers at the set interval period of the coagulation reaction;

s4, comparing the gel indexes P recorded at the same time, wherein the larger the gel index P is at the same time, the stronger the coagulant gel efficiency N is.

The gel index P is measured by means of a densitometer placed in each glass container separately, the densitometer reading being equal to the gel index P.

Further, the coagulating material in step S2 comprises m kinds of coagulants, and the m kinds of coagulants are combined into C¹ _m+C² _m+C³ _m……+C^m _mEach coagulation material is provided with n groups of levels with different addition mass proportions, and m is a natural integer greater than zero.

Further, when m is 1, the average gel efficiency of the single concrete material at the n-group level Wherein P is_iSpecific gravity reading in glass containers of group i mass fraction, P_oIs a densitometer reading within a glass container in the blank.

Further, m>1 hour, average gel efficiency of each compound concrete material under n groups of levelsP_i ^AmRepresenting the gel index P at the level of the i-th group of m different coagulants.

Further, when m is greater than 1, N is a positive value, which shows that A1/A2/…. Am compound concrete material gel is matched and mutually promoted; the N value is negative, which indicates that the A1/A2/… Am compound concrete material gel matches mutually exclusive.

Further, a target control group is set, and a certain proportion of the coagulation material with the adopted formula is added into the mud with a fixed quantity and a fixed concentration to obtain the gel index P of the mud_ckComparison of P_i ^A1P_i ^A2P_i ^A3…… P_i ^AmAnd P_ckJudging whether the Am compound concrete material is a qualified concrete material under the level of the i group or not under the condition of A1/A2/….

Further, when P is_i ^A1P_i ^A2P_i ^A3……P_i ^AmAnd P_ckThe absolute value of the difference is less than that of other formulas and P_ckAnd selecting A1/A2/… as the absolute value of the difference, wherein Am compound coagulant is a qualified formula under the level of the ith group. I.e. P_i ^A1P_i ^A2P_i ^A3……P_i ^AmAnd P_ckWhen they are close.

Further, when P is_i ^A1P_i ^A2P_i ^A3……P_i ^AmGreater than P_ckComparison of P_i-1 ^A1P_i-1 ^A2P_i-1 ^A3…… P_i-1 ^AmAnd P_i+1 ^A1P_i+1 ^A2P_i+1 ^A3……P_i+1 ^AmAnd (3) judging the change trend of the A1/A2 … Am compound concrete material along with the addition mass ratio, properly setting a plurality of groups of different mixture ratios near the numerical value of the i-th group of addition mass ratio, and finding out the optimal mixture ratio of the A1/A2 … Am compound concrete material.

Further, the coagulation reaction interval period set in step S3 is 0.5h, 1.0h, 1.5h, or 2.0 h.

Gel index (custom) definitions in the present invention: the method is characterized in that a certain ratio of coagulation materials are added into the slurry in a certain concentration range, and the specific gravity of the slurry is displayed through a coagulation reaction in a certain period of time. At the moment, the displayed value of the hydrometer cannot reflect the real specific gravity of a slurry solution, but the slurry and the specific ingredients are coagulated to compare the sinking resistance of the hydrometer, the coagulation effect is better, and the larger the resistance is, the larger the reading of the hydrometer is. The gel index is a dimensionless value greater than 1 and is used only for gel rheology comparison, while mud rheology is significantly related to key parameters of the mud curing process (e.g., feed length, dewatering length, single cycle time, mud cake thickness, etc.). The larger the gel index, the shorter the single cycle time for dewatering and curing the mud, and the larger the mud cake thickness value.

Similar rheological indices for drilling mud are: viscosity, gel fraction, static shear, and the like. Some of the index measuring methods are difficult to control, some methods are too long in time consumption, some methods are narrow in quantization interval, and the method is not suitable for the invention of the technology.

Said gel index P of the invention is measured by means of a densitometer placed in each glass container separately, the densitometer reading being equal to the gel index P.

According to the invention, through measuring the gel indexes of various slurry curing ingredients, a relative comparison mode is achieved by setting a blank control Po with identity, the advantages and disadvantages of the various slurry curing pretreatment ingredients are rapidly determined, and finally the aim of screening a slurry curing coagulation formula with higher efficiency is achieved.

The invention has simple test condition and is easy and quick to implement. The quantitative analysis index of the test result is visual and easy to understand;

the invention has simple test environment, less error, high precision of test result and good reproducibility;

the quantitative analysis of the single-factor gel efficiency, the double-factor interaction gel efficiency and the multi-factor interaction gel efficiency of the ingredients is beneficial to deepening understanding of the coagulation ingredients and improving the accuracy of the optimal formula;

the invention is based on the test of gel index, the nature of chemical coagulation before slurry curing is grasped in principle, and the test and quantitative analysis result has strong guidance on large-scale slurry curing production.

Detailed Description

The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.